- dovecot - dovecot.org

Re: [Dovecot] dovecot dimensioning
by mancyborg＠gmail.com 02 Nov '12

02 Nov '12

Hi Javier, yes i see. Storage for now is just a 3tb sata2 hdd, so i guess that write performance is around 100 MB/s What do you think about that ? Thanks and regards, Mike On Thu, 1 Nov 2012 19:55:35 +0100 Javier de Miguel Rodriguez <javierdemiguel-ext(a)us.es> wrote: > > IMHO, fast storage is the main requirement for dovecot. > > > > El 01/11/2012, a las 16:20, "mancyborg(a)gmail.com" <mancyborg(a)gmail.com> escribió: > > > Hi All, first post here, nice to meet you :) > > > > I've been using dovecot + postfix + clamav + spamassassin for years but always with few users. > > > > Now i must build a server for 1500 users, > > they will use various email software (thunderbird, outlook, ..) > > the webmail (i'm not sure if squirrelmail or roundcube) > > and blackberry devices (with the BIS service). > > > > There will be around 1000 domains (virtual_domains) and postfix will read its users and domains from mysql. > > > > Let's say that they will send and receive around 5000 emails per hour (10K in total per hour). > > > > I was thinking to use karspersky server instead of clamav. > > > > I already have the hardware, it is a server with 4 physical cpu (Intel Xeon E5504 @ 2.00GHz) and 24 gb of ram, > > do you think it is enough ? > > > > > > Thanks for supporting, > > regards and have a nice day, > > Mike

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[Dovecot] dovecot dimensioning
by mancyborg＠gmail.com 01 Nov '12

01 Nov '12

Hi All, first post here, nice to meet you :) I've been using dovecot + postfix + clamav + spamassassin for years but always with few users. Now i must build a server for 1500 users, they will use various email software (thunderbird, outlook, ..) the webmail (i'm not sure if squirrelmail or roundcube) and blackberry devices (with the BIS service). There will be around 1000 domains (virtual_domains) and postfix will read its users and domains from mysql. Let's say that they will send and receive around 5000 emails per hour (10K in total per hour). I was thinking to use karspersky server instead of clamav. I already have the hardware, it is a server with 4 physical cpu (Intel Xeon E5504 @ 2.00GHz) and 24 gb of ram, do you think it is enough ? Thanks for supporting, regards and have a nice day, Mike

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Re: [Dovecot] Pigeonhole 3.3 broken against Dovecot 2.1.10
by Daniel L. Miller 01 Nov '12

01 Nov '12

On 31.10.2012 21:23, Daniel L. Miller wrote: > On 31.10.2012 21:16, Daniel L. Miller wrote: > >> On 31.10.2012 > > 04:26, Timo Sirainen wrote: > >>> I think this is a Dovecot bug, fixed > could also do this by adding -lssl -lcrypto manually to the > > installed > dovecot-config and > >> -left:#1010ff 2px solid; margin-left:5px; width:100%">I see > pto" already in the DOVECOT_SSL_LIBS section of > > /usr/local/lib/dovecot/dovecot-config. What should be changed? > > Ok - I > read the patch, and modified the LIBDOVECOT_STORAGE section accordingly. > Same comp> > >> Thought I'd see if I could guess the next fix - added the parms to LIBDOVECOT_LOGIN as well. Seems to have fixed it. Sorry for the multiple posts - it's been a long day. -- Daniel

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Re: [Dovecot] Pigeonhole 3.3 broken against Dovecot 2.1.10
by Daniel L. Miller 01 Nov '12

01 Nov '12

On 31.10.2012 21:23, Daniel L. Miller wrote: > On 31.10.2012 21:16, Daniel L. Miller wrote: > >> On 31.10.2012 > > 04:26, Timo Sirainen wrote: > >>> I think this is a Dovecot bug, fixed > could also do this by adding -lssl -lcrypto manually to the > > installed > dovecot-config and > >> -left:#1010ff 2px solid; margin-left:5px; width:100%">I see > pto" already in the DOVECOT_SSL_LIBS section of > > /usr/local/lib/dovecot/dovecot-config. What should be changed? > > Ok - I > read the patch, and modified the LIBDOVECOT_STORAGE section accordingly. > Same comp> > >> I take that back - it's not exactly the same compile error. Now it references libdovecot-login.so for the undefined SSL references. -- Daniel

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Re: [Dovecot] Pigeonhole 3.3 broken against Dovecot 2.1.10
by Daniel L. Miller 01 Nov '12

01 Nov '12

On 31.10.2012 21:16, Daniel L. Miller wrote: > On 31.10.2012 04:26, Timo Sirainen wrote: > >> I think this is a Dovecot bug, fixed > > by: http://hg.dovecot.org/dovecot-2.1/rev/7d931927e4ac [1][1] > >> You > > could also do this by adding -lssl -lcrypto manually to the installed > dovecot-config and running configure again for pigeonhole. > > I see "-lssl > -lcrypto" already in the DOVECOT_SSL_LIBS section of > /usr/local/lib/dovecot/dovecot-config. What should be changed? Ok - I read the patch, and modified the LIBDOVECOT_STORAGE section accordingly. Same compile error for Pigeonhole after performing a 'make clean' and 'configure'. -- Daniel Links: ------ [1] http://hg.dovecot.org/dovecot-2.1/rev/7d931927e4ac

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[Dovecot] Pigeonhole 3.3 broken against Dovecot 2.1.10
by Daniel L. Miller 01 Nov '12

01 Nov '12

I'm compiling as I normally do. The config line for Dovecot is: configure --with-ldap --with-ssl --with-bzlib --with-zlib --with-stemmer --with-lucene --with-ldap followed by make & make install Then a 'configure' for Pigeonhole, followed by make, yields: libtool: link: gcc -std=gnu99 -g -O2 -Wall -W -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wformat=2 -Wbad-function-cast -fno-builtin-strftime -Wstrict-aliasing=2 -o .libs/sieve-dump sieve-dump.o -Wl,--export-dynamic ../../src/lib-sieve/.libs/libdovecot-sieve.so ../../src/lib-sieve-tool/.libs/libsieve-tool.a /usr/local/lib/dovecot/libdovecot-storage.so /usr/local/lib/dovecot/libdovecot-lda.so -L/usr/local/lib/dovecot /usr/local/lib/dovecot/libdovecot.so -lrt -Wl,-rpath -Wl,/usr/local/lib/dovecot libtool: link: gcc -std=gnu99 -g -O2 -Wall -W -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wformat=2 -Wbad-function-cast -fno-builtin-strftime -Wstrict-aliasing=2 -o .libs/sievec sievec.o -Wl,--export-dynamic ../../src/lib-sieve/.libs/libdovecot-sieve.so ../../src/lib-sieve-tool/.libs/libsieve-tool.a /usr/local/lib/dovecot/libdovecot-storage.so /usr/local/lib/dovecot/libdovecot-lda.so -L/usr/local/lib/dovecot /usr/local/lib/dovecot/libdovecot.so -lrt -Wl,-rpath -Wl,/usr/local/lib/dovecot /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `sk_new_null(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_get_error(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_get_peer_certificate(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_CTX_load_verify_locations(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_CTX_use_PrivateKey(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `DH_free(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_set_ex_data(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_CTX_set_tmp_rsa_callback(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_CTX_use_certificate(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_alert_desc_string_long(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_get_ex_data(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_get_ex_new_index(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_CTX_set_client_CA_list(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `X509_get_ext_d2i(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_accept(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `X509_STORE_add_cert(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSLv23_server_method(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `OBJ_txt2nid(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_write(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `sk_num(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `BIO_ctrl_get_write_guarantee(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_set_cipher_list(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `sk_push(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `ERR_get_error(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_alert_type_string_long(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_COMP_get_name(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `ENGINE_by_id(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `BIO_write(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `i2d_DHparams(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `X509_NAME_ENTRY_get_data(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_CIPHER_get_name(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_use_PrivateKey(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_set_info_callback(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `X509_get_subject_name(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `ENGINE_init(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `ERR_clear_error(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_load_error_strings(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `ENGINE_set_default_RSA(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `BIO_free(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_CIPHER_get_bits(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `X509_INFO_free(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `X509_STORE_set_flags(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_new(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `X509_NAME_dup(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `X509_NAME_get_index_by_NID(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `d2i_DHparams(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `X509_NAME_get_text_by_NID(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `OPENSSL_add_all_algorithms_noconf(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `ENGINE_set_default_DSA(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `ENGINE_cleanup(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `X509_NAME_get_entry(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `ASN1_STRING_type(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_library_init(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_get_current_cipher(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_CTX_set_cipher_list(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_connect(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `ERR_error_string_n(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `X509_STORE_CTX_get_ex_data(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_set_verify(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `BIO_new_bio_pair(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSLv23_client_method(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_use_certificate(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `ASN1_STRING_length(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_CTX_get_cert_store(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_CTX_set_tmp_dh_callback(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `ENGINE_set_default_ciphers(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `PEM_read_bio_PrivateKey(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `BIO_new_mem_buf(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_get_ex_data_X509_STORE_CTX_idx(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `sk_pop_free(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `sk_value(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `GENERAL_NAME_free(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `ERR_peek_error(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_get_version(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `RAND_bytes(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_CTX_new(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `BIO_ctrl_pending(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_set_bio(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `ASN1_STRING_data(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `ENGINE_load_builtin_engines(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `PEM_read_bio_X509(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `EVP_cleanup(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `X509_STORE_add_crl(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `BIO_read(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `ENGINE_finish(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_free(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_read(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `X509_NAME_oneline(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_CTX_free(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `ERR_free_strings(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `EVP_PKEY_free(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_get_current_compression(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `X509_verify_cert_error_string(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_CTX_ctrl(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `ERR_peek_last_error(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `RSA_generate_key(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `SSL_state_string_long(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `PEM_X509_INFO_read_bio(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `DH_generate_parameters(a)OPENSSL_1.0.0' /usr/local/lib/dovecot/libdovecot-storage.so: undefined reference to `X509_free(a)OPENSSL_1.0.0' collect2: ld returned 1 exit status make[3]: *** [sieve-dump] Error 1 make[3]: *** Waiting for unfinished jobs.... -- Daniel

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[Dovecot] Out of memory/Managesieve
by Jim Knuth 31 Oct '12

31 Oct '12

Hello, I have here a problem with managesieve. With the login about webmail (roundcube) comes here in the log: --snip dovecot: managesieve-login: Fatal: pool_system_realloc(4294967296): Out of memory dovecot: managesieve-login: Fatal: master: service(managesieve-login): child 10157 returned error 83 (Out of memory (service managesieve-login { vsz_limit=1024 MB }, you may need to increase it)) --snap I've increased of 2048M and the same above. then with 4096 M happens the following --snip dovecot: managesieve-login: Panic: epoll_ctl(add, 61538840) failed: Bad file descriptor dovecot: managesieve-login: Fatal: master: service(managesieve-login): child 9777 killed with signal 6 (core dumps disabled) --snap How can one solve then this? Any ideas greatly appreciated. Thanks. -- Mit freundlichen Grüßen, with kind regards, Jim Knuth --------- Backup interessiert niemanden - Auf Restore kommt es an!

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[Dovecot] IMAP proxy between Office 365 client/Sun Messaging Server
by John Dalbec 31 Oct '12

31 Oct '12

I would like to be able to migrate messages from existing end-user accounts on Sun Messaging Server to Office 365 using an administrator login and password. Unfortunately the migration tool for Office 365 doesn't support SASL AUTHENTICATE PLAIN login. The online documentation I've found suggests that I should be able to configure dovecot as an IMAP proxy and have it log in to Sun Messaging Server with AUTHENTICATE PLAIN and encode_base64("user\0admin\0adminpw") in response to a login from the Office 365 migration tool. I'd like to configure dovecot to run only the IMAP proxy if possible. I was thinking of setting all accounts to use the same (strong) password in the proxy. Would anyone be willing to share a sample configuration? Thanks, John Dalbec ellucian Luminis system administrator Youngstown State University

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[Dovecot] Unable to get Managesieve working
by Cliff Dunn 31 Oct '12

31 Oct '12

I have Roundcube webmail (v. 0.8.2) running with the managesieve plugin (v. 5.1). I am able to create sieve rules without any problems in Roundcube, but incoming mail is not being processed with the rule I specify. I suspect there is something that isn't configured correctly in dovecot, but unfortunately I am unable to find a resolution online and my very limited knowledge of dovecot isn't allowing me to solve this problem on my own. I am including my dovecot config below. Please keep my knowledge level in mind when suggesting options and let me know if there is any other information I can provide to help troubleshoot the problem. Thanks for any assistance! # 1.2.15: /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-5-amd64 x86_64 Debian 6.0.6 log_timestamp: %Y-%m-%d %H:%M:%S protocols: imap imaps managesieve ssl_cert_file: /etc/ssl/certs/postfix.pem ssl_key_file: /etc/ssl/private/postfix.key ssl_cipher_list: ALL:!LOW:!SSLv2 login_dir: /var/run/dovecot/login login_executable(default): /usr/lib/dovecot/imap-login login_executable(imap): /usr/lib/dovecot/imap-login login_executable(managesieve): /usr/lib/dovecot/managesieve-login mail_privileged_group: mail mail_location: maildir:~/mail:LAYOUT=fs:INBOX=~/mail/ mbox_write_locks: fcntl dotlock mail_executable(default): /usr/lib/dovecot/imap mail_executable(imap): /usr/lib/dovecot/imap mail_executable(managesieve): /usr/lib/dovecot/managesieve mail_plugin_dir(default): /usr/lib/dovecot/modules/imap mail_plugin_dir(imap): /usr/lib/dovecot/modules/imap mail_plugin_dir(managesieve): /usr/lib/dovecot/modules/managesieve auth default: mechanisms: plain login passdb: driver: pam passdb: driver: pam userdb: driver: passwd userdb: driver: passwd socket: type: listen client: path: /var/spool/postfix/private/auth mode: 432 user: postfix group: postfix plugin: sieve: ~/.dovecot.sieve sieve_dir: ~/mail/sieve

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[Dovecot] Dovecot stops to work - anvil problem
by FABIO FERRARI 31 Oct '12

31 Oct '12

Hi all, we have a problem about anvil, it seems that when we have a high load the dovecot stops to work. Sometimes it is sufficient to make a dovecot reload, but sometimes we have to restart it. These are the lines related to anvil in the dovecot.log: [root@secchia ~]# grep anvil /var/log/dovecot.log | more Oct 26 11:13:55 anvil: Error: net_accept() failed: Too many open files Oct 26 11:14:32 imap-login: Error: net_connect_unix(anvil) failed: Resource temporarily unavailable Oct 26 11:14:32 imap-login: Fatal: Couldn't connect to anvil Oct 26 11:14:33 pop3-login: Error: net_connect_unix(anvil) failed: Resource temporarily unavailable Oct 26 11:14:33 pop3-login: Fatal: Couldn't connect to anvil [...] (many lines like these) Oct 26 12:01:10 pop3-login: Fatal: Couldn't connect to anvil Oct 26 12:01:18 auth: Error: read(anvil-auth-penalty) failed: Connection reset by peer Oct 26 12:01:18 auth: Error: read(anvil-auth-penalty) failed: Connection reset by peer Oct 26 12:01:18 auth: Error: net_connect_unix(anvil-auth-penalty) failed: Connection refused Oct 26 12:01:18 auth: Error: net_connect_unix(anvil-auth-penalty) failed: Connection refused Oct 26 12:01:18 auth: Error: read(anvil-auth-penalty) failed: Connection reset by peer Oct 26 12:01:18 auth: Error: net_connect_unix(anvil-auth-penalty) failed: Connection refused And this is the output of the doveconf -n: [root@secchia ~]# doveconf -n # 2.0.1: /etc/dovecot/dovecot.conf # OS: Linux 2.6.18-308.11.1.el5 x86_64 Red Hat Enterprise Linux Server release 5.8 (Tikanga) xfs auth_cache_size = 1024 auth_cache_ttl = 21600 s auth_debug = yes auth_debug_passwords = yes auth_master_user_separator = * auth_mechanisms = plain login auth_socket_path = /var/run/dovecot/auth-userdb auth_verbose = yes base_dir = /var/run/dovecot/ disable_plaintext_auth = no hostname = mail.unimore.it info_log_path = /var/log/dovecot.log lda_mailbox_autocreate = yes log_path = /var/log/dovecot.log mail_debug = yes mail_location = maildir:/cl/mail/vhosts/sms.unimo.it/%Ln/Maildir mail_plugins = $mail_plugins quota mailbox_idle_check_interval = 60 s mbox_write_locks = fcntl namespace { inbox = yes location = prefix = INBOX. separator = . type = private } passdb { args = /usr/local/etc/dovecot.masterusers driver = passwd-file master = yes } passdb { args = dovecot driver = pam } plugin { quota = maildir:User quota quota_exceeded_message = Quota exceeded (mailbox is full) quota_rule = *:storage=200MB quota_rule2 = *:messages=100000 quota_rule3 = INBOX.Trash:storage=+100M quota_warning = storage=90%% quota-warning 90 %u quota_warning2 = storage=85%% quota-warning 85 %u quota_warning3 = messages=95%% quota-warning 95 %u quota_warning4 = messages=80%% quota-warning 80 %u setting_name = quota } postmaster_address = postmaster(a)unimore.it quota_full_tempfail = yes service anvil { client_limit = 199999 process_limit = 199999 } service auth { client_limit = 14500 unix_listener auth-userdb { mode = 0600 user = vmail } } service imap-login { inet_listener imap { port = 143 } inet_listener imaps { port = 993 } process_limit = 5000 } service imap { process_limit = 5000 } service pop3-login { inet_listener pop3 { port = 110 } inet_listener pop3s { port = 995 } } service pop3 { process_limit = 1024 } service quota-warning { executable = script /usr/local/bin/quota-warning.sh unix_listener quota-warning { group = vmail user = vmail } user = dovecot } ssl_ca = </etc/pki/tls/certs/ca_unimore_tcs.pem ssl_cert = </etc/pki/tls/certs/cert-852-mail.unimore.it-cluster.pem ssl_key = </etc/pki/tls/certs/mailcluster.key userdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } verbose_ssl = yes protocol lda { mail_plugins = $mail_plugins quota } protocol imap { mail_plugins = $mail_plugins imap_quota } protocol pop3 { mail_plugins = $mail_plugins quota pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_uidl_format = %08Xu%08Xv } [root@secchia ~]# And these are the limit settings in the OS: * soft nofile 131072 * hard nofile 131072 Have someone had the same problem? thanks in advance Fabio Ferrari

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