December 2022 - dovecot

Backups and disaster recovery
by GDS 04 Dec '22

04 Dec '22

Hello all! After reading some of the past threads on backups, I was wondering if I could get a sanity check... I run a Maildir configuration for a small (10 mailboxes) mail server. Using "doveadm backup", for each mailbox I do: - Weekly full backups and then copy the files to a network-based filesystem.- Daily incremental backups and then copy the files to a network-based filesystem. My recovery assumption is that in case of hardware failure, I would re-set up the mail service and for each mailbox I will recover at the right directory the latest full mailbox backup and on top of it, each incremental backup to the latest day. Does this sound like a sound strategy? Also, I was thinking of setting up a second dovecot server on another server and replicating my primary on an hourly basis to decrease recovery time. But I looked at mbsync and it seems to require mailbox login/password for each mailbox (which I don't have). Is there an alternative? Thank you!

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HIGHESTMODSEQ not increasing
by Ronny Forberger 04 Dec '22

04 Dec '22

Hi, I have a problem with my Dovecot IMAP Server on Debian Linux. I migrated it from FreeBSD to Debian, but since then the HIGHESTMODSEQ value for INBOX is not increasing, when I receive new e-mail. This causes my Groupware not to report any new e-mail via ActiveSync. Here is the protocol transscript: [I] <~>-> openssl s_client -crlf -connect mail.forberger-online.de:993 CONNECTED(00000003) [...] --- read R BLOCK * OK [CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE LITERAL+ AUTH=PLAIN AUTH=LOGIN] Dovecot (Debian) ready. A LOGIN REDACTED REDACTED A OK [CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS THREAD=ORDEREDSUBJECT MULTIAPPEND URL-PARTIAL CATENATE UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS BINARY MOVE SNIPPET=FUZZY PREVIEW=FUZZY STATUS=SIZE SAVEDATE LITERAL+ NOTIFY SPECIAL-USE] Logged in A SELECT INBOX (CONDSTORE) * FLAGS (\Answered \Flagged \Deleted \Seen \Draft $MDNSent Junk NonJunk $label4 $label1 $label2 $label3 $label5 Old $Forwarded NOTJUNK $has_cal) * OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft $MDNSent Junk NonJunk $label4 $label1 $label2 $label3 $label5 Old $Forwarded NOTJUNK $has_cal \*)] Flags permitted. * 7286 EXISTS * 0 RECENT * OK [UIDVALIDITY 1291740963] UIDs valid * OK [UIDNEXT 158448] Predicted next UID * OK [HIGHESTMODSEQ 190086] Highest A OK [READ-WRITE] Select completed (0.001 + 0.000 secs). A SELECT INBOX (CONDSTORE) * FLAGS (\Answered \Flagged \Deleted \Seen \Draft $MDNSent Junk NonJunk $label4 $label1 $label2 $label3 $label5 Old $Forwarded NOTJUNK $has_cal) * OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft $MDNSent Junk NonJunk $label4 $label1 $label2 $label3 $label5 Old $Forwarded NOTJUNK $has_cal \*)] Flags permitted. * 7288 EXISTS * 0 RECENT * OK [UIDVALIDITY 1291740963] UIDs valid * OK [UIDNEXT 158450] Predicted next UID * OK [HIGHESTMODSEQ 190086] Highest A OK [READ-WRITE] Select completed (0.002 + 0.000 + 0.001 secs). The Groupware's IMAP client library is reporting, that MODSEQ is not increasing. It stays at 190086, nevertheless I receive new e-mail. I have tried the commands doveadm index and doveadm force-resync on the INBOX, without any change. My filesystem where the mailboxes reside is on ext4. Can you help me what is wrong? Best regards, Ronny Forberger -- Ronny Forberger ronnyforberger(a)ronnyforberger.de

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Some info to configure OAuth2 using Keycloak
by Gary Horchem 02 Dec '22

02 Dec '22

Hello I’m about to configure and test Dovecot with Keycloak. When do you use the dovecot-oauth2.token.conf.ext and/or dovecot-oauth2.plain.conf.ext over dovecot-oauth2.token.conf.ext Thanks. and/or Sent from my iPhone

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Doveadm Move Query
by Simon B 01 Dec '22

01 Dec '22

I have a production Dovecot problem and although I searched the mailing lists, I could not find an answer and I hope you can give me a quick answer/pointer in the right direction. I have mails for a user (user(a)domain.net) under /var/spool/mail/virtual/ domain.net/user and I want to move ALL the mails to /var/spool/mail/virtual/domain.com/user If I use #doveadm -Dv move -u user(a)domain.net Maildir:/var/spool/mail/virtual/ domain.net/user Maildir:/var/spool/mail/virtual/domain.com/user ALL I get doveadm(root): Fatal: Unknown argument MAILDIR:/var/spool/mail/virtual/ domain.com/user if I use #doveadm -Dv move -u user(a)domain.net Maildir:/var/spool/mail/virtual/ domain.net/user /var/spool/mail/virtual/domain.com/user ALL doveadm(root): Fatal: Unknown argument /var/spool/mail/virtual/ domain.com/user What the hell am I doing wrong!? :) Thanks. Simon

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