- dovecot - dovecot.org

Re: Mail-crypt plugin clarification
by Joseph Tam 14 Dec '17

14 Dec '17

rje writes: > I'm looking into ways to encrypt the stored email on my server. The idea is > to make it impossible for my hosting provider (who has access to my VPS) to > read the mail from the disk. Just to be clear, if at any point your VPS has access to the plaintext mail (or keys that decrypt mail), then the VPS provider could access your decrypted mail. To make it unfeasible for your VPS to read your mail, it has to arrive at your VPS pre-encrypted. I can envision a system where you import encrypted mail into your mail store, then use client IMAP access to be decrypted locally by your mail reader. However, metadata is still accessible by your VPS provider. If your VPS is the MTA that directly handles SMTP from your correspondees sending you unencrypted messages, you can't lock out a sufficiently skilled platform admin. Joseph Tam <jtam.home(a)gmail.com>

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Error: stat no such file or directory with 2.2.33.2
by María Arrea 14 Dec '17

14 Dec '17

We have upgraded today from Dovecot 2.2.31 to Dovecot 2.2.33.2 and modified our config to include ITERINDEX in mail_location and we are detecting some errors like this: /Dec 13 08:17:31 buzon_rhel7 dovecot: imap(rboloix): Error: stat(/buzones/location/18/48/rboloix/mailboxes/SIT - Pra&AwE-cticas 2014/dbox-Mails) failed: No such file or directory// //Dec 13 08:40:24 buzon_rhel7 dovecot: imap(espi): Error: stat(/buzones/location/11/21/espi/mailboxes/CURSOS/ACCION SOCIAL/dbox-Mails) failed: No such file or directory// //Dec 13 08:40:25 buzon_rhel7 dovecot: imap(espi: Error: stat(/buzones/location/11/21/espi/mailboxes/CURSOS/ACCION SOCIAL/dbox-Mails) failed: No such file or directory// //Dec 13 08:41:59 buzon_rhel7 dovecot: imap(espi): Error: stat(/buzones/location/11/21/espi/mailboxes/CURSOS/ACCION SOCIAL/dbox-Mails) failed: No such file or directory/ I have grepped logs of past 4 weeks and have not found this errors with Dovecot 2.2.31. Any idea of what is going on? Full doveconf -n output below: /# 2.2.33.2 (d6601f4ec): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.21 (92477967) # OS: Linux 3.10.0-693.11.1.el7.x86_64 x86_64 Red Hat Enterprise Linux Server release 7.4 (Maipo) xfs auth_cache_negative_ttl = 10 secs auth_cache_size = 10 M auth_cache_ttl = 2 mins auth_master_user_separator = * auth_mechanisms = plain login auth_worker_max_count = 5500 base_dir = /var/run/dovecot/ default_client_limit = 5000 default_process_limit = 6500 disable_plaintext_auth = no imap_capability = +XLIST imap_client_workarounds = tb-extra-mailbox-sep delay-newmail tb-lsub-flags lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes mail_fsync = never mail_gid = entrega mail_home = /buzones/location/%2.26Hn/%2.200Hn/%n/home_usuario/ mail_location = mdbox:/buzones////location//%2.26Hn/%2.200Hn/%n:ITERINDEX:INDEX=/indices_dovecot/indices/%2.26Hn/%2.200Hn/%n:ALT=/buzones/alternativo////location//%2.26Hn/%2.200Hn/%n mail_max_userip_connections = 15000 mail_plugins = " zlib acl quota virtual mail_log notify" mail_uid = entrega mailbox_list_index = yes 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 mdbox_purge_preserve_alt = yes mdbox_rotate_interval = 1 days mdbox_rotate_size = 60 M namespace { inbox = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox SPAM { auto = subscribe special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = type = private } namespace { list = yes location = mdbox:/buzones////location//%%2.26Hn/%%2.200Hn/%%n:ALT=/buzones/alternativo////location//%%2.26Hn/%%2.200Hn/%%n:INDEX=/indices_dovecot/indices/%%2.26Hn/%%2.200Hn/%%n:INDEXPVT=~/mdbox/carpeta_compartida/%%u prefix = carpeta_compartida/%%u/ separator = / subscriptions = no type = shared } namespace { list = yes location = virtual:/etc/dovecot/virtual:INDEX=~/mdbox/virtual:CONTROL=~/mdbox/virtual prefix = Carpetas_virtuales/ separator = / } passdb { args = /etc/dovecot/deny deny = yes driver = passwd-file } passdb { args = /etc/dovecot/dovecot-ldap.conf driver = ldap } passdb { args = /etc/dovecot/dovecot-ldap.conf driver = ldap } plugin { acl = vfile acl_shared_dict = file:/buzones////location//acls_compartidas.db lda_mailbox_autosubscribe = yes mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename mail_log_fields = uid box msgid size subject from quota = dict:Cuota de usuario::file:/buzones/cuotas/%n quota_rule2 = Trash:storage=+10%% quota_warning = storage=90%% aviso_cuota 90 %u sieve = /buzones////location//%2.26Hn/%2.200Hn/%n/home_usuario/dovecot.sieve sieve_dir = /buzones////location//%2.26Hn/%2.200Hn/%n/home_usuario/sieve/ zlib_save = gz zlib_save_level = 9 } pop3_no_flag_updates = yes protocols = pop3 imap sieve service anvil { client_limit = 25000 } service auth { client_limit = 32000 unix_listener auth-master { user = entrega } unix_listener auth-userdb { user = entrega } user = root } service aviso_cuota { executable = script /usr/local/bin/quota-warning.sh unix_listener aviso_cuota { mode = 0666 } user = entrega } service config { process_min_avail = 4 } service imap-login { executable = /usr/libexec/dovecot/imap-login group = dovenull process_min_avail = 2 service_count = 0 vsz_limit = 1 G } service imap { executable = /usr/libexec/dovecot/imap process_limit = 8000 process_min_avail = 12 vsz_limit = 1 G } service managesieve-login { executable = /usr/libexec/dovecot/managesieve-login inet_listener sieve { port = 2000 } process_limit = 2000 vsz_limit = 1 G } service managesieve { executable = /usr/libexec/dovecot/managesieve process_limit = 5000 } service pop3-login { executable = /usr/libexec/dovecot/pop3-login process_limit = 5000 process_min_avail = 2 service_count = 0 vsz_limit = 1 G } service pop3 { executable = /usr/libexec/dovecot/pop3 process_limit = 5000 } ssl_ca = </etc/pki/SCS2016/cadena_Terena.crt ssl_cert = </etc/pki/SCS2016/buzonus_us_es.crt ssl_key = # hidden, use -P to show it ssl_protocols = !SSLv2 !SSLv3 userdb { args = /etc/dovecot/dovecot-ldap.conf driver = ldap } userdb { args = /etc/dovecot/dovecot-ldap-userdb.conf driver = ldap } verbose_proctitle = yes protocol sieve { managesieve_implementation_string = dovecot managesieve_logout_format = bytes=%i/%o managesieve_max_line_length = 65536 } protocol lda { hostname = location info_log_path = log_path = mail_fsync = optimized mail_plugins = sieve zlib quota virtual acl postmaster_address = me(a)xxxxx.com syslog_facility = mail } protocol imap { mail_plugins = zlib quota imap_quota virtual acl imap_acl notify mail_log } protocol pop3 { mail_plugins = zlib quota virtual pop3_enable_last = yes pop3_uidl_format = %g }/

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TLS Error and not working lmtp
by Jakob Schürz 13 Dec '17

13 Dec '17

Hi! I have some troubles with the virtual plugin. I run a self-compiled dovecot 2.2.33.2 from debian testing. I patched this version with the QRESYNC-Patch from a few weeks ago. But i always get an errormessage, when i try to open an email from a virtual mailbox. So i cloned the actual git-Repo and compiled dovecot and pigonehole-sieve. The problem with the virtual plugin seems gone away. But there are some other problems. I use ssl=required and with dovecot from debian TLS/SSL and STARTTLS works fine. With the selfcompiled from git, i get this error: dovecot[1284]: imap-login: Error: Failed to initialize SSL server context: Couldn't parse DH parameters: error:0906D06C:PEM routines:PEM_read_bio:no start line: Expecting: DH PARAMETERS: user=<>, rip=127.0.0.1, lip=127.0.0.1, secured, session=<D6bC4Rlg8ut/AAAB> The key and crt are exactly the same files as before. The second problem is, lmtp is not working. I use exactly the same config for the debians dovecot and dovecot from git. But in the gitversion the error in exim is: Failed to connect to socket /var/run/dovecot/lmtp for dovecot_lmtp transport: Connection refused My config is: # dovecot -n # 2.3.devel (b1aac3a1d): /usr/local/etc/dovecot/dovecot.conf # Pigeonhole version 0.5.devel (624e1769) # OS: Linux 4.13.0-trunk-amd64 x86_64 Debian 9.3 btrfs auth_debug = yes auth_mechanisms = plain login cram-md5 digest-md5 auth_socket_path = /var/run/dovecot/auth-userdb auth_verbose = yes first_valid_uid = 1000 imap_capability = +XDOVECOT imap_client_workarounds = tb-extra-mailbox-sep lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes listen = *, ::1 login_trusted_networks = 127.0.0.1/8 192.168.0.0/24 192.168.1.0/24 172.17.0.0/24 172.18.0.0/24 mail_debug = yes mail_gid = vmail mail_home = /var/mail/%u mail_location = maildir:/var/mail/%u/Maildir:LAYOUT=fs:INDEX=/var/lib/dovecot/db/indexes/Maildir/%u:INDEXPVT=/var/lib/dovecot/db/indexes/Maildir/%u:CONTROL=/var/lib/dovecot/db/control/Maildir/%u mail_plugins = zlib quota acl listescape mail_log notify virtual mail_privileged_group = vmail mail_server_admin = mailto:jakob@xundeenergie.at mail_shared_explicit_inbox = yes mail_uid = vmail 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 mmap_disable = yes namespace { hidden = no inbox = no list = children location = maildir:/var/mail/mailarchiv/%u/:LAYOUT=fs:INDEX=/var/lib/dovecot/db/indexes/mailarchiv/%u:INDEXPVT=/var/lib/dovecot/db/indexes/mailarchiv/%u mailbox incoming { auto = create } mailbox outgoing { auto = create } prefix = Mailarchiv/ separator = / subscriptions = no type = private } namespace { list = children location = maildir:/var/mail/public/:LAYOUT=fs:INDEX=/var/lib/dovecot/db/indexes/public/%u:INDEXPVT=/var/lib/dovecot/db/indexes/public/%u prefix = Roseggergasse/ separator = / subscriptions = no type = public } namespace Geteilt { hidden = no inbox = no list = children location = maildir:/var/mail/%%u/Maildir:LAYOUT=fs:INDEXPVT=/var/lib/dovecot/db/indexes/shared/%u/%%u:INDEX=/var/lib/dovecot/db/indexes/shared/%u/%%u prefix = Geteilt/%%n/ separator = / subscriptions = no type = shared } namespace Real { hidden = yes list = no location = virtual:/var/mail/real:INDEX=/var/lib/dovecot/db/indexes/real/%u prefix = Real/ separator = / subscriptions = no } namespace Synoptic { hidden = no list = children location = virtual:/var/mail/virtual:INDEX=/var/lib/dovecot/db/indexes/virtual/%u mailbox INBOX/Archives { auto = no special_use = \Archive } mailbox INBOX/Drafts { auto = no special_use = \Drafts } mailbox INBOX/Entwürfe { auto = no special_use = \Drafts } mailbox INBOX/Junk { auto = no special_use = \Junk } mailbox INBOX/Sent { auto = no special_use = \Sent } mailbox INBOX/Spam { auto = no special_use = \Junk } prefix = Synoptic/ separator = / subscriptions = no } namespace inbox { hidden = no inbox = yes location = mailbox Archiv { auto = no special_use = \Archive } mailbox Archive { auto = no special_use = \Archive } mailbox Archives { auto = no special_use = \Archive } mailbox "Deleted Messages" { auto = no special_use = \Trash } mailbox Drafts { auto = no special_use = \Drafts } mailbox Entwürfe { auto = no special_use = \Drafts } mailbox "Gelöschte Elemente" { auto = no special_use = \Trash } mailbox "Gelöschte Objekte" { auto = no special_use = \Trash } mailbox Gesendet { auto = no special_use = \Sent } mailbox "Gesendete Elemente" { auto = no special_use = \Sent } mailbox "Gesendete Objekte" { auto = no special_use = \Sent } mailbox Important { auto = no } mailbox Junk { auto = subscribe autoexpunge = 30 days special_use = \Junk } mailbox Mistkübel { auto = no special_use = \Trash } mailbox Papierkorb { auto = no special_use = \Trash } mailbox Sent { auto = subscribe special_use = \Sent } mailbox "Sent Messages" { auto = no special_use = \Sent } mailbox Spam { auto = no special_use = \Junk } mailbox Synoptic/Alle { auto = no comment = All my messages special_use = \All } mailbox Trash { auto = no special_use = \Trash } mailbox Wichtig { auto = create } prefix = INBOX/ separator = / subscriptions = no type = private } namespace subscriptions { hidden = yes list = no location = prefix = subscriptions = yes } passdb { args = scheme=CRYPT username_format=%u /usr/local/etc/dovecot/users driver = passwd-file } plugin { acl = vfile:/etc/dovecot/dovecot-acl:cache_secs=300 acl_shared_dict = file:/var/lib/dovecot/db/shared-mailboxes.db mail_home = /var/mail/%u setting_name = sieve, managedsieve sieve = file:/var/mail/%u/sieve/;active=/var/mail/%u/sieve/%u.sieve } postmaster_address = postmaster@localhost protocols = imap pop3 lmtp imap lmtp sieve pop3 sieve service anvil { unix_listener anvil-auth-penalty { mode = 00 } } service auth { unix_listener auth-client { group = vmail mode = 0666 user = vmail } unix_listener auth-userdb { group = vmail mode = 0666 user = vmail } } service imap-login { inet_listener imap { port = 143 } inet_listener imaps { port = 993 ssl = yes } process_min_avail = 1 service_count = 1 } service imap { executable = imap postlogin process_limit = 1024 vsz_limit = 400 M } service lmtp { executable = lmtp -L user = vmail vsz_limit = 400 M } service postlogin { executable = script-login -d rawlog } ssl = required ssl_cert = </usr/local/etc/dovecot/dovecot.crt ssl_key = # hidden, use -P to show it userdb { args = username_format=%u /usr/local/etc/dovecot/users default_fields = home=/var/mail/%u driver = passwd-file } verbose_proctitle = yes verbose_ssl = yes protocol lmtp { auth_username_format = %n mail_plugins = zlib quota acl listescape mail_log notify virtual quota sieve acl } protocol lda { mail_plugins = zlib quota acl listescape mail_log notify virtual quota sieve acl } protocol imap { mail_max_userip_connections = 10 mail_plugins = zlib quota acl listescape mail_log notify virtual imap_quota imap_acl } Any ideas jakob

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sieve problem config antispam
by Günther J. Niederwimmer 12 Dec '17

12 Dec '17

Hello, I like to configure the antispam with sieve from this site https:// wiki2.dovecot.org/HowTo/AntispamWithSieve#For_rspamd But when I compile the scripts I have this Errors sievec /usr/lib64/dovecot/sieve/report-ham.sieve report-ham: line 1: error: require command: unknown Sieve capability `vnd.dovecot.pipe'. report-ham: line 1: error: require command: unknown Sieve capability `imapsieve'. report-ham: line 15: error: unknown command 'pipe' (only reported once at first occurrence). report-ham: error: validation failed. sievec(root): Fatal: failed to compile sieve script '/usr/lib64/dovecot/sieve/ report-ham.sieve' My system is a centos 7 dovecot 2.2.33.1 dovecot-pigeonhole 2.2.33.1 -- mit freundlichen Grüssen / best regards, Günther J. Niederwimmer

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Recommended tool for migrating IMAP servers
by Davide Marchi 12 Dec '17

12 Dec '17

Hi Friends, I would like to ask you a suggestion: I need to migrate a imap server to a new one and then dismiss the old one. Reading from relative Dovecot documentation page (https://wiki.dovecot.org/Migration) more tools are shown: UW-IMAP's mailutil, imapsync, YippieMove and Larch. The each mail servers are Linux based, one of this (mine) is Dovecot. Based on your experience which of these tools would be preferable to use? Thank you very much Davide

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Re: hosting emails at home
by André Rodier 11 Dec '17

11 Dec '17

Hello Mike, Yes, I am using a static IP address, but in theory, you could use a dynamic one. Nothing technically would prevent email exchanges between two boxes, as long as the SPF records are up to date and the DKIM is properly setup. Unfortunately, some ISPs are simply blacklisting full range of private IP addresses just because they are not officials / commercials. Kind regards, André On 10/12/17 19:24, Mike wrote: > > Nice. > > Are you using a static IP in this setup? > > It doesn't seem like it, but wanted to be sure. > > Mike. > > Quoting André Rodier <andre(a)rodier.me>: > >> Hello everyone, >> >> I have been using Postfix and Dovecot for my personal emails for years. >> After being tired of reinstalling my personal mail server many times, I >> am currently writing some Ansible scripts to do it automatically. >> >> I obviously checked the other projects, and did not found anything close >> to what I am looking for, so I am implementing it now. >> >> The final goal is to have a box that once online, would setup itself, by >> creating the certificates, the DKIM keys and update the appropriate DNS >> records. >> >> This is so far what I have achieved: >> - Automatic generation of certificates using LetsEncrypt >> - Automatic update of the domain entries: imap, smtp, webmail, etc. >> - Automatic generation of a DKIM keys >> - Automatic update of specific records (MX, SPF, DKIM, etc.) >> - LDAP server for user accounts, with or without system login. >> - Installation of Postfix, Dovecot and Roundcube >> >> Sending DKIM signed emails is working, and the IMAP server is configured >> as well, although basic. >> >> The postfix and dovecot configuration are not yet entirely finished. I >> am planing to add an anti spam system, and sieve, amongst other things. >> >> Although in development during my spare time, the system is normally >> robust and you should be able to run it multiple times without errors. >> >> If anyone is interested to use it, to have a look, or to take part, it >> is here: https://github.com/progmaticltd/homebox >> >> Kind regards, >> André Rodier. > >

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hosting emails at home
by André Rodier 11 Dec '17

11 Dec '17

Hello everyone, I have been using Postfix and Dovecot for my personal emails for years. After being tired of reinstalling my personal mail server many times, I am currently writing some Ansible scripts to do it automatically. I obviously checked the other projects, and did not found anything close to what I am looking for, so I am implementing it now. The final goal is to have a box that once online, would setup itself, by creating the certificates, the DKIM keys and update the appropriate DNS records. This is so far what I have achieved: - Automatic generation of certificates using LetsEncrypt - Automatic update of the domain entries: imap, smtp, webmail, etc. - Automatic generation of a DKIM keys - Automatic update of specific records (MX, SPF, DKIM, etc.) - LDAP server for user accounts, with or without system login. - Installation of Postfix, Dovecot and Roundcube Sending DKIM signed emails is working, and the IMAP server is configured as well, although basic. The postfix and dovecot configuration are not yet entirely finished. I am planing to add an anti spam system, and sieve, amongst other things. Although in development during my spare time, the system is normally robust and you should be able to run it multiple times without errors. If anyone is interested to use it, to have a look, or to take part, it is here: https://github.com/progmaticltd/homebox Kind regards, André Rodier.

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recover missing messages - files still present in storage
by Webert de Souza Lima 11 Dec '17

11 Dec '17

Hi, I have a user account that had almost 20GB of emails and now they're missing. Only a few are available trough IMAP or doveadm. I can see in /path/to/mailbox/storage that thousands of "m." files are still there, summing up 19GB of files. doveconf -n http://termbin.com/7lgc I have tried: accessing via IMAP accessing via doveadm search/fetch/mailbox status doveadm index doveadm force-resync doveadm dump: -- INDEX: /srv/dovecot2/index/DOMAIN_SUPRESSED/ACCOUNT_SUPRESSED/storage/dovecot.map.index version .................. = 7.3 base header size ......... = 120 header size .............. = 176 record size .............. = 20 compat flags ............. = 1 index id ................. = 1500105889 (2017-07-15 05:04:49) flags .................... = 0 uid validity ............. = 1500105889 (2017-07-15 05:04:49) next uid ................. = 26514 messages count ........... = 26513 seen messages count ...... = 0 deleted messages count ... = 0 first recent uid ......... = 1 first unseen uid lowwater = 1 first deleted uid lowwater = 26446 log file seq ............. = 47 log file tail offset ..... = 15656 log file head offset ..... = 15656 log2 rotate time ......... = 1512558922 (2017-12-06 09:15:22) last temp file scan ...... = 0 (1969-12-31 21:00:00) day stamp ................ = 1512604800 (2017-12-06 22:00:00) day first uid[0] ......... = 26450 day first uid[1] ......... = 26395 day first uid[2] ......... = 26328 day first uid[3] ......... = 26252 day first uid[4] ......... = 26234 day first uid[5] ......... = 26216 day first uid[6] ......... = 26135 day first uid[7] ......... = 26055 -- Extension 0 -- name ........ = map hdr_size .... = 8 reset_id .... = 0 record_offset = 8 record_size . = 12 record_align = 4 header ........ = 6111000001000000 -- Extension 1 -- name ........ = ref hdr_size .... = 0 reset_id .... = 0 record_offset = 6 record_size . = 2 record_align = 2 -- Keywords -- -- CACHE: /srv/dovecot2/index/DOMAIN_SUPRESSED/ACCOUNT_SUPRESSED/storage/dovecot.map.index.cache cache is unusable Regards, Webert Lima DevOps Engineer at MAV Tecnologia *Belo Horizonte - Brasil*

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Mailsploit problem in responce of BODYSTRUCTURE
by TACHIBANA Masashi 11 Dec '17

11 Dec '17

Hi, I tried to see a mail that have a strange From header in bellow URL: https://www.mailsploit.com/index Then, I got BODYSTRUCTURE response contain next: ((NIL NIL "service" "paypal.com")) Are this problem already founded by anyone? So already fixed? -- TACHIBANA Masashi QUALITIA CO., LTD. mailto:tachibana@qualitia.co.jp

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iPhone no longer authenticating
by Mark Foley 11 Dec '17

11 Dec '17

I've switched a user to being an active directory user. That user's email client authorizes just fine with dovecot using GSSAPI. However, now his iPhone won't authorize. In the dovecot log file I get: Dec 01 14:27:28 auth: Debug: client in: AUTH 1 PLAIN service=imap secured session=q4n3W0xfggBiZj9s lip=98.102.63.107 rip=98.102.63.108 lport=993 rport=49538 resp=AG1wcmVzcwBEaW5va3JvbndhbGw0NQ== (previous base64 data may contain sensitive data) Dec 01 14:27:32 auth-worker(5988): Debug: shadow(mpress,98.102.xx.yyy): lookup Dec 01 14:27:32 auth-worker(5988): Info: shadow(mpress,98.102.xx.yyy): unknown user (given password: *******) Dec 01 14:27:34 auth: Debug: client passdb out: FAIL 1 user=mpress Dec 01 14:27:34 imap-login: Info: Aborted login (auth failed, 1 attempts in 6 secs): user=<mpress>, method=PLAIN, rip=98.102.xx.yyy, lip=98.102.63.107, TLS, session=<q4n3W0xfggBiZj9s> Dec 01 14:27:34 imap-login: Debug: SSL alert: close notify [98.102.xx.yyy] This same user will authenticate OK from his local domain workstation: Dec 01 14:28:52 auth: Debug: master userdb out: USER 1948516353 mpress system_groups_user=HPRS\mpress uid=10005gid=10000 home=/home/HPRS/mpress auth_token=ce3050035718ed0996af698400c4de1be453ec06 auth_user=mpress(a)HPRS.LOCAL Dec 01 14:28:52 imap-login: Info: Login: user=<mpress>, method=GSSAPI, rip=192.168.0.54, lip=192.168.0.2, mpid=9755, TLS, session=<6MT1YExftwDAqAA2> I'm pretty sure the reason has to do with Active Directory authenication locally, but of course his iPhone is not a member of the domain, and he is no longer in /etc/passwd/shadow. So, what is the best way to get the iPhone to authenticate? Here's my current config: > doveconf -n # 2.2.15: /usr/local/etc/dovecot/dovecot.conf # OS: Linux 4.4.88 x86_64 Slackware 14.2 auth_debug = yes auth_debug_passwords = yes auth_gssapi_hostname = $ALL auth_krb5_keytab = /etc/dovecot/dovecot.keytab auth_mechanisms = plain login gssapi auth_use_winbind = yes auth_username_format = %n auth_verbose = yes auth_verbose_passwords = plain disable_plaintext_auth = no info_log_path = /var/log/dovecot_info mail_location = maildir:~/Maildir passdb { driver = shadow } protocols = imap ssl_cert = </etc/ssl/certs/OHPRS/GoDaddy/Apache/2016-08-10/54e789087d419b6e.crt ssl_key = </etc/ssl/certs/OHPRS/GoDaddy/mail.ohprs.org.key userdb { driver = passwd } verbose_ssl = yes Thanks, --Mark

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