- dovecot - dovecot.org

High number of folders, Low sink speed
by aria mazloom 07 Mar '24

07 Mar '24

I just moved my server. Dovecot version 2.3.19.1 (9b53102964) After the transfer, I deleted the indexes and caches and rebuilt them. One of my users is experiencing slowness when send/recevie all his folders. The user has about 250 folders with a maximum depth of 3. The volume of emails is about 13 GB. Outlook wants to receive all email folders in every send/recevie all folders. Outlook 2019 and Windows 10. We connected to other users with his Outlook and we don't have this problem. We also tested with another device and same user and we have this problem. Another user with 100 folders also reported slower sync speeds after transfer server. Outlook 2019 and Windows 10. I just moved my server. Dovecot version 2.3.19.1 (9b53102964) After the transfer, I deleted the indexes and caches and rebuilt them. One of my users is experiencing slowness when send/recevie all his folders. The user has about 250 folders with a maximum depth of 3. The volume of emails is about 13 GB. Outlook wants to receive all email folders in every send/recevie all folders. Outlook 2019 and Windows 10. We connected to other users with his Outlook and we don't have this problem. We also tested with another device and same user and we have this problem. Another user with 100 folders also reported slower sync speeds after transfer server. Outlook 2019 and Windows 10.

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Bug/Warning not sure which
by Richard Shetron 04 Mar '24

04 Mar '24

Hello, My sysadmin and I spent a couple hours trying to figure out a POP3 problem that has worked for about 20 or so years. We run our own dns for sgeinc.com. I've always used mail.sgeinc.com as my incoming and outgoing server. At various times mail has been an alias for another machine. It's currently on the same address as sge.sgeinc.com. On the update forced on us on 2/22/24 or 2/23/24 it stopped working. It still works as an outgoing server but incoming POP3 it stopped working. It started working when I changed my incoming server to sge.sgeinc.com. You might want to look into it or not. We chased the initial problem to, we think, ssh-keygen in /usr/local/bin/ which was Not found but is there. Thanks root@sge:/usr/local/bin# dovecot -n # 2.3.7.2 (3c910f64b): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.7.2 () # OS: Linux 5.4.0-172-generic x86_64 Ubuntu 20.04.6 LTS # Hostname: sge.sgeinc.com auth_mechanisms = plain login mail_location = maildir:~/Maildir namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { driver = pam } protocols = " imap lmtp pop3" service auth { unix_listener /var/spool/postfix/private/auth { mode = 0666 } unix_listener auth-userdb { group = postfix mode = 0660 user = postfix } } service pop3-login { inet_listener pop3 { port = 110 } } ssl = required ssl_cert = </etc/letsencrypt/live/sgeinc.com/fullchain.pem ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it userdb { driver = passwd }

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Re: Bug/Warning not sure which
by Joseph Tam 03 Mar '24

03 Mar '24

> From: Richard Shetron <guest2(a)sgeinc.com> > We run our own dns for sgeinc.com. > I've always used mail.sgeinc.com as my incoming and outgoing server. At > various times mail has been an alias for another machine. It's > currently on the same address as sge.sgeinc.com. On the update forced > on us on 2/22/24 or 2/23/24 it stopped working. It still works as an > outgoing server but incoming POP3 it stopped working. It started > working when I changed my incoming server to sge.sgeinc.com. Maybe your SSL cert? $ openssl s_client -connect mail.sgeinc.com:995 < /dev/null |& openssl x509 -noout -text | grep DNS: DNS:sge.sgeinc.com, DNS:sgeinc.com, DNS:www.sgeinc.com "mail.sgeinc.com" is not in your list of alternate names, hence your mail clients started rejecting the SSL certificate as invalid. Joseph Tam <jtam.home(a)gmail.com>

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LMTP: user does not exist
by dienes_devout_0d＠icloud.com 03 Mar '24

03 Mar '24

Hello all, I have been using Postfix/Dovecot for some time, but now need to setup Sieve. As I understand this requires Dovecot to do the local mailbox delivery. In my case LMTP would be the best. Here is the current setup. The users on the system all have local accounts and authenticate with Kerberos via pam_krb5 against kerberos realm domain.tld. They authenticate to the mail server as user(a)domain.tld. The server name is mail.domain.tld and mailbox names on the mail server are user(a)mail.domain.tld. User mailboxes are located in /home/user/Maildir. I went through the configuration described in the documentation (https://doc.dovecot.org/configuration_manual/howto/postfix_dovecot_lmtp/#ho…) but hit a weird problem. When LMTP is enabled in Postfix, the delivery fails with an error: 550 5.1.1 <user(a)mail.domain.tld> User doesn't exist: user(a)mail.domain.tld (in reply to RCPT TO command)) If LMTP is not enabled in Postfix, it successfully delivers the messages to ~/Maildir as expected. Can anyone advise me why is this failure with LMTP occurring and how do I fix it? Thank you, Alex

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better delivery mechanism to maildir?
by dovecot.org＠schildbach.de 03 Mar '24

03 Mar '24

As many of you probably are, I'm using Postfix together with Dovecot. Postfix delivers mail for my users by writing them directly to the filesystem (maildir). I wonder is there a better alternative? I'd like to separate the two services on different physical machines, so a shared filesystem isn't trivial any more. (I'd also like to stay with maildir storage and rather not do SQL or similar.) Can mail be delivered via IMAP for example? Or is there some other delivery protocol I don't know about that both Dovecot and Postfix support? Thanks!

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Dbox-storage error when compiling: no member named 'st_atim' in 'struct stat'
by James L. Brown 03 Mar '24

03 Mar '24

Hi all. I’m getting errors when trying to compile 2.3.21 on macOS 14.3.1 Sonoma. It ends with: 3.2.1/include -MT dbox-storage.lo -MD -MP -MF .deps/dbox-storage.Tpo -c dbox-storage.c -fno-common -DPIC -o .libs/dbox-storage.o dbox-storage.c:296:32: error: no member named 'st_atim' in 'struct stat' last_temp_file_scan = stats.st_atim.tv_sec; ~~~~~ ^ dbox-storage.c:297:24: error: no member named 'st_ctim' in 'struct stat' change_time = stats.st_ctim.tv_sec; ~~~~~ ^ 2 errors generated. make[5]: *** [dbox-storage.lo] Error 1 make[4]: *** [all-recursive] Error 1 make[3]: *** [all-recursive] Error 1 make[2]: *** [all-recursive] Error 1 make[1]: *** [all-recursive] Error 1 Before ‘make’ I ran: sudo CPPFLAGS=-I/opt/homebrew/Cellar/openssl(a)3/3.2.1/include LDFLAGS=-L/opt/homebrew/opt/openssl@3/lib LDFLAGS=-L/opt/homebrew/lib ./configure --with-ssl=openssl --with-mysql --with-sodium I had to run ’sudo’ before ‘make’ as I was getting this error: error: error opening '.deps/fuzzer.Tpo': /Users/jlbrown/Downloads/dovecot-2.3.21/src/lib-test/.deps/fuzzer.Tpo: Permission denied Would someone be able to help we with the dbox-storage error? Thanks, James. Hi all. I’m getting errors when trying to compile 2.3.21 on macOS 14.3.1 Sonoma. It ends with: 3.2.1/include -MT dbox-storage.lo -MD -MP -MF .deps/dbox-storage.Tpo -c dbox- storage.c -fno-common -DPIC -o .libs/dbox-storage.o dbox-storage.c:296:32:error:no member named 'st_atim' in 'struct stat' last_temp_file_scan = stats.st_atim.tv_sec; ~~~~~ ^ dbox-storage.c:297:24:error:no member named 'st_ctim' in 'struct stat' change_time = stats.st_ctim.tv_sec; ~~~~~ ^ 2 errors generated. make[5]: *** [dbox-storage.lo] Error 1 make[4]: *** [all-recursive] Error 1 make[3]: *** [all-recursive] Error 1 make[2]: *** [all-recursive] Error 1 make[1]: *** [all-recursive] Error 1 Before ‘make’ I ran: sudo CPPFLAGS=-I/opt/homebrew/Cellar/openssl(a)3/3.2.1/include LDFLAGS=-L/opt/ homebrew/opt/openssl@3/lib LDFLAGS=-L/opt/homebrew/lib ./configure --with- ssl=openssl --with-mysql --with-sodium I had to run ’sudo’ before ‘make’ as I was getting this error: error:error opening '.deps/fuzzer.Tpo': /Users/jlbrown/Downloads/dovecot- 2.3.21/src/lib-test/.deps/fuzzer.Tpo: Permission denied Would someone be able to help we with the dbox-storage error? Thanks, James.

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IMAPSieve plugin and special-use attribute
by Kirill Kirilenko 02 Mar '24

02 Mar '24

Hello. Since version 0.5.9 Pigeonhole has RFC 8579 support, so Dovecot admins can easily setup redirection of spam messages into a personal mailbox identified by a particular special-use attribute rather than the mailbox's name. That's great! But, if we need to setup, for example, spam/not-spam reporting using IMAPSieve plugin, we still forced to specify mailbox's name in rules: # From elsewhere to Spam folder imapsieve_mailbox1_name = Spam imapsieve_mailbox1_causes = COPY imapsieve_mailbox1_before = file:/etc/dovecot/report-spam.sieve # From Spam folder to elsewhere imapsieve_mailbox2_name = * imapsieve_mailbox2_from = Spam imapsieve_mailbox2_causes = COPY imapsieve_mailbox2_before = file:/etc/dovecot/report-ham.sieve I think, it would be great to allow one to specify a special-use attribute in imapsieve_mailboxXXX_name and imapsieve_mailboxXXX_from settings. Best regards, Kirill Kirilenko.

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seeking advice Error: Failed to lookup user
by noemi 28 Feb '24

28 Feb '24

Hi, I'm having some problems after activating the quota plugin: I followed the guide from the doc[0] but I'm having problems with some virtual user. I understand that,with my conf,the quota plugin check the limit of a user and then tell postfix to accept/discard the mail. i have some users under my main domain [conf in /etc/passwd] and some virtual user/domains [conf in virtusertable/virtdomains as files in postfix]. the virtual users use their local user for the login, so dovecot doesn't know they are virtual. I think the problem is here, because it is clear that the quota-status check is made by dovecot using the virtual user and not the local user[1]. understanding the problem doesn't help me in the resolution [other than burn everything and rebuild with a single management for local/virtual users using a db] but i will prefer a more soft approach. any help? my complete conf below[2] thanks, noemi [0] https://blog.sys4.de/postfix-dovecot-mailbox-quota-en.html [1] where the virtual user is mail(a)virtdomain.com and the local user is mail_virtdomain the check is done to user 'mail', thus returning a error: Nov 16 06:36:09 quota-status(other-user)<129776><OOwwMv+3VWXw+gEAKobZ8Q>: Error: Failed to lookup user mail(a)virtdomain.com: Mail access for users with UID 8 not permitted (see first_valid_uid in config file, uid from userdb lookup). [2] # 2.3.4.1 (f79e8e7e4): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.4 () # OS: Linux 6.1.0-10-amd64 x86_64 Debian 11.7 zfs # Hostname: mail-ng.pangea.org auth_mechanisms = plain login auth_username_format = %Ln default_client_limit = 3000 disable_plaintext_auth = no first_valid_uid = 8 log_path = /var/log/mail.log mail_location = maildir:/home/%n/Maildir mail_plugins = " quota" mail_privileged_group = mail managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { driver = pam } plugin { quota = maildir:User quota quota_exceeded_message = Quota exceeded, please go to https://laweb.pangea.org/contacte/ for instructions on how to fix this. quota_grace = 10%% quota_max_mail_size = 100M quota_status_nouser = DUNNO quota_status_overquota = 552 5.2.2 Mailbox is full and cannot receive any more emails quota_warning = storage=95%% quota-warning 95 %u quota_warning2 = storage=80%% quota-warning 80 %u sieve = file:~/sieve/;active=~/.dovecot.sieve sieve_user_log = /var/log/sieve.log sieve_vacation_send_from_recipient = yes } protocols = " imap lmtp sieve pop3" service auth { unix_listener /var/spool/postfix/private/dovecot-auth { group = postfix mode = 0660 user = postfix } } service imap-login { process_limit = 1024 service_count = 100 } service imap { process_limit = 1024 } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } service pop3-login { process_limit = 1024 service_count = 0 } service pop3 { process_limit = 1024 } service quota-status { client_limit = 1 executable = quota-status -p postfix inet_listener { address = 127.0.0.1 port = 7777 } } service quota-warning { executable = script /usr/local/bin/quota-warning.sh unix_listener quota-warning { mode = 0666 user = vmail } user = dovecot } ssl_cert = </etc/letsencrypt/live/mail-ng.pangea.org/fullchain.pem ssl_client_ca_dir = /etc/ssl/certs ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it userdb { driver = passwd } protocol imap { mail_max_userip_connections = 40 mail_plugins = " quota imap_quota" } protocol lmtp { mail_plugins = " quota sieve" }

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Packages for Debian bookworm
by dovecot.org＠schildbach.de 25 Feb '24

25 Feb '24

Is there a reason there are no packages for recent Debian and Ubuntu versions? https://repo.dovecot.org/

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Dovecot Authentication Protocol via SSL?
by dovecot.org＠schildbach.de 24 Feb '24

24 Feb '24

I'm trying to run the Dovecot Authentication Protocol (port 12345) [1] via SSL. Here is my non-SSL config: service auth { inet_listener { port = 12345 haproxy = yes } } Adding ssl=yes to the inner block doesn't seem to change anything, I can't connect via "openssl s_client -connect", for example. I do use SSL for IMAPS, so I know my general SSL configuration is fine and I've got a valid LetsEncrypt cert. Also, Postfix doesn't appear to offer any configuration in terms of running this protocol via SSL. Question: Does it even matter? I'm about to run this protocol over untrusted networks. Is it perhaps designed to handle this situation? I'm using SASL plain authentication. I'm obviously concerned about leaking passwords, but also about leaking usernames and activity logs in general. [1] https://doc.dovecot.org/3.0/developer_manual/design/auth_protocol/

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