December 2021 - dovecot

Re: Replication weirdness
by Daniel Miller 04 Dec '21

04 Dec '21

Another item. Again, it may be a 2.3.13 issue and I'm now on 2.3.17. But...I had problem when using the "-N" parameter for dsync. So - I just have (had): replication_dsync_parameters = -d -l 30 -U -x INBOX/virtual -x INBOX/shared Now that things are working - I wanted to have my other namespaces sync as well. So I went to: replication_dsync_parameters = -d -l 30 -U -n INBOX -n INBOX/Archives -n INBOX/Lists -x INBOX/virtual -x INBOX/shared This appears to be working (the sync is just starting)...but I'm seeing lock errors in the logs such as: Dec 3 14:34:24 bubba dovecot: doveadm(dmiller(a)amfes.com)<31785><TV+0LlGbqmEpfAAAnbWsyw>: Error: Couldn't lock /var/mail/amfes.com/dmiller/.dovecot-sync.lock: fcntl(/var/mail/amfes.com/dmiller/.dovecot-sync.lock, write-lock, F_SETLKW) locking failed: Timed out after 30 seconds (WRITE lock held by pid 31373) Checking the pid in question I see it's actively syncing a folder in my mailbox. So I'm guessing, purely guessing, that by having multiple namespaces explicitly directed to sync Dovecot is trying to start a sync process for each of those namespaces - but all of them share a common lock and therefore only one operation is allowed at a time. Am I correct, and whether or not I am - how can I correct these errors? Do I dare try going back to just "-N"? -- Daniel ------ Original Message ------ From: "Daniel Miller" <dmiller(a)amfes.com> To: dovecot(a)dovecot.org Sent: 12/3/2021 2:16:28 PM Subject: Replication weirdness >First, I have to say this. After configuring everything correctly - and >that means *everything* correctly - Dovecot replication Just Works. I'm >not sure how (yes I do - Timo & Co. Magic) - but it does. Real-time new >sync is near instantaneous. > >Now the problem. Or the background for the problem. My primary server >uses sdbox for primary storage, mdbox for archival storage, and >fts-solr. I spun up a second server, using sdbox, mdbox, and >fts-flatcurve. My namespaces are as defined below. As best I can tell >(based on diff comparing two 'doveconf -n' outputs) my namespaces are >the same on both servers. > >namespace archives { > list = children > location = mdbox:/var/mail/%d/%n/Archives/mdbox > mailbox Unsorted { > auto = no > special_use = \Archive > } > prefix = INBOX/Archives/ > separator = / > subscriptions = no > type = private >} >namespace inbox { > alias_for = > hidden = no > inbox = yes > list = yes > location = > mailbox "Deleted Messages" { > auto = no > autoexpunge = 30 days > special_use = \Trash > } > mailbox Drafts { > auto = subscribe > special_use = \Drafts > } > mailbox Sent { > auto = subscribe > special_use = \Sent > } > mailbox Trash { > auto = subscribe > autoexpunge = 30 days > special_use = \Trash > } > prefix = INBOX/ > separator = / > subscriptions = no > type = private >} >namespace lists { > list = children > location = mdbox:/var/mail/%d/%n/Lists/mdbox > prefix = INBOX/Lists/ > separator = / > subscriptions = no > type = private >} >namespace subscriptions { > hidden = yes > list = no > location = > prefix = > separator = / > subscriptions = yes > type = private >} >namespace usershares { > list = yes > location = sdbox:/var/mail/%%d/%%n/sdbox:NO-NOSELECT > prefix = INBOX/shared/%%d/%%n/ > separator = / > subscriptions = no > type = shared >} >namespace virtual { > list = children > location = virtual:/var/mail/%d/%n/virtual > mailbox Flagged { > comment = All my flagged messages > special_use = \Flagged > } > prefix = INBOX/virtual/ > separator = / > subscriptions = no >} > >I also have: >plugin { > mailbox_alias_new = Sent Messages > mailbox_alias_new2 = Sent Items > mailbox_alias_new3 = Deleted Messages > mailbox_alias_old = Sent > mailbox_alias_old2 = Sent > mailbox_alias_old3 = Trash >} > >This setup worked fine with my single server. Then I enabled >replication - just on the primary. Dsync went to work (it seemed to >take forever for the initial sync but that's what happens with large >mailboxes and slow internet connections). > >The problem came up with certain subfolders. And I believe it only >happens with subfolders that have spaces in their names. I had two >user's mailboxes (under Sent), one of which had a "Sent Messages" >symlink alias for "Sent", that started generating tens or hundreds of >duplicates during sync. Fortunately those subfolders only had a few >mails in them. But I had trees looking like: > >[...] (below is under /var/mail/domain/user/sdbox/mailboxes/Sent/) >Proposal >Requests-temp-c6e003375e64a961c93d00009db5accb-temp-1-temp-f80b1a00ce9aa961a86-temp-2 >Proposal >Requests-temp-c6e003375e64a961c93d00009db5accb-temp-1-temp-f80b1a00ce9aa961a86-temp-3 >Proposal >Requests-temp-c6e003375e64a961c93d00009db5accb-temp-2-temp-023fa4271c9ca9611ade0400b88bfabe >Proposal >Requests-temp-c6e003375e64a961c93d00009db5accb-temp-2-temp-023fa4271c9ca9611ad-temp-1 >Proposal Requests-temp-c6e003375e64a961c93d00009db5accb-temp-2-temp-1 >Proposal Requests-temp-c6e003375e64a961c93d00009db5accb-temp-2-temp-2 >Proposal >Requests-temp-c6e003375e64a961c93d00009db5accb-temp-2-temp-2-temp-1-temp-1 >Proposal Requests-temp-c6e003375e64a961c93d00009db5accb-temp-2-temp-3 >Proposal Requests-temp-c6e003375e64a961c93d00009db5accb-temp-2-temp-4 >Proposal Requests-temp-c6e003375e64a961c93d00009db5accb-temp-2-temp-5 >Proposal >Requests-temp-c6e003375e64a961c93d00009db5accb-temp-2-temp-e2aa0f35c99ba961356500009db5accb >[...] > >I kept stopping, cleaning up the folders, and re-starting - and they >kept regenerating. I tried renaming the folders to eliminate the spaces >and I think that helped in one case - for the others I just moved the >folders outside of the mail area completely to let the sync finish. > >Now that it's been stable for a day or two - I enabled sync in the >other direction. And after setting *all* the required parameters >instead of just most of them...it's working. But...I'm nervous about >moving the problem folders back over. I will say, if it makes any >difference, my primary server *was* running version 2.3.13 and I just >updated it to 2.3.17. The remote is also 2.3.17. > >-- >Daniel

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Replication weirdness
by Daniel Miller 04 Dec '21

04 Dec '21

First, I have to say this. After configuring everything correctly - and that means *everything* correctly - Dovecot replication Just Works. I'm not sure how (yes I do - Timo & Co. Magic) - but it does. Real-time new sync is near instantaneous. Now the problem. Or the background for the problem. My primary server uses sdbox for primary storage, mdbox for archival storage, and fts-solr. I spun up a second server, using sdbox, mdbox, and fts-flatcurve. My namespaces are as defined below. As best I can tell (based on diff comparing two 'doveconf -n' outputs) my namespaces are the same on both servers. namespace archives { list = children location = mdbox:/var/mail/%d/%n/Archives/mdbox mailbox Unsorted { auto = no special_use = \Archive } prefix = INBOX/Archives/ separator = / subscriptions = no type = private } namespace inbox { alias_for = hidden = no inbox = yes list = yes location = mailbox "Deleted Messages" { auto = no autoexpunge = 30 days special_use = \Trash } mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Sent { auto = subscribe special_use = \Sent } mailbox Trash { auto = subscribe autoexpunge = 30 days special_use = \Trash } prefix = INBOX/ separator = / subscriptions = no type = private } namespace lists { list = children location = mdbox:/var/mail/%d/%n/Lists/mdbox prefix = INBOX/Lists/ separator = / subscriptions = no type = private } namespace subscriptions { hidden = yes list = no location = prefix = separator = / subscriptions = yes type = private } namespace usershares { list = yes location = sdbox:/var/mail/%%d/%%n/sdbox:NO-NOSELECT prefix = INBOX/shared/%%d/%%n/ separator = / subscriptions = no type = shared } namespace virtual { list = children location = virtual:/var/mail/%d/%n/virtual mailbox Flagged { comment = All my flagged messages special_use = \Flagged } prefix = INBOX/virtual/ separator = / subscriptions = no } I also have: plugin { mailbox_alias_new = Sent Messages mailbox_alias_new2 = Sent Items mailbox_alias_new3 = Deleted Messages mailbox_alias_old = Sent mailbox_alias_old2 = Sent mailbox_alias_old3 = Trash } This setup worked fine with my single server. Then I enabled replication - just on the primary. Dsync went to work (it seemed to take forever for the initial sync but that's what happens with large mailboxes and slow internet connections). The problem came up with certain subfolders. And I believe it only happens with subfolders that have spaces in their names. I had two user's mailboxes (under Sent), one of which had a "Sent Messages" symlink alias for "Sent", that started generating tens or hundreds of duplicates during sync. Fortunately those subfolders only had a few mails in them. But I had trees looking like: [...] (below is under /var/mail/domain/user/sdbox/mailboxes/Sent/) Proposal Requests-temp-c6e003375e64a961c93d00009db5accb-temp-1-temp-f80b1a00ce9aa961a86-temp-2 Proposal Requests-temp-c6e003375e64a961c93d00009db5accb-temp-1-temp-f80b1a00ce9aa961a86-temp-3 Proposal Requests-temp-c6e003375e64a961c93d00009db5accb-temp-2-temp-023fa4271c9ca9611ade0400b88bfabe Proposal Requests-temp-c6e003375e64a961c93d00009db5accb-temp-2-temp-023fa4271c9ca9611ad-temp-1 Proposal Requests-temp-c6e003375e64a961c93d00009db5accb-temp-2-temp-1 Proposal Requests-temp-c6e003375e64a961c93d00009db5accb-temp-2-temp-2 Proposal Requests-temp-c6e003375e64a961c93d00009db5accb-temp-2-temp-2-temp-1-temp-1 Proposal Requests-temp-c6e003375e64a961c93d00009db5accb-temp-2-temp-3 Proposal Requests-temp-c6e003375e64a961c93d00009db5accb-temp-2-temp-4 Proposal Requests-temp-c6e003375e64a961c93d00009db5accb-temp-2-temp-5 Proposal Requests-temp-c6e003375e64a961c93d00009db5accb-temp-2-temp-e2aa0f35c99ba961356500009db5accb [...] I kept stopping, cleaning up the folders, and re-starting - and they kept regenerating. I tried renaming the folders to eliminate the spaces and I think that helped in one case - for the others I just moved the folders outside of the mail area completely to let the sync finish. Now that it's been stable for a day or two - I enabled sync in the other direction. And after setting *all* the required parameters instead of just most of them...it's working. But...I'm nervous about moving the problem folders back over. I will say, if it makes any difference, my primary server *was* running version 2.3.13 and I just updated it to 2.3.17. The remote is also 2.3.17. -- Daniel

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Searching 30 GB mailbox
by Einar Bjarni Halldórsson 03 Dec '21

03 Dec '21

Hi, We're migrating our mailboxes from Zimbra to dovecot, running on FreeBSD 12.2. We're using mdbox and solr for fts. dovecot version 2.3.17. One of our mailboxes gets a bcc of every outgoing mail from our system and it currently holds ~4.5 million messages taking 30 GB. One of the ways we use the mailbox is that when outgoing mail is sent, we store the Message-ID in our database, and in our admin interface we can open the mail and it's fetched from IMAP by doing a 'SEARCH HEADER Message-ID <MSG_ID>'. In Zimbra this was reasonably fast, but after migrating the mailbox to dovecot it's 30 seconds which I think we can reduce. After turning on mail_debug I see this in our log https://pastebin.com/kP9H7gSB Looks like solr finishes searching instantly, then there's ~30 seconds of silence in the logs, and then more log lines about fetching data from mail cache. The same thing happens if I use telnet and just issue a 'SEARCH HEADER...' command. How can I find out what dovecot is doing in those 30 seconds? .einar

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Expunged message reappeared
by Claudio Corvino 03 Dec '21

03 Dec '21

Hi, I have two IMAP/LMTP Dovecot server in replica (version 2.3.4.1), I use LDAP/AD for /userdb, /replica is working, but sometimes I get these errors into log: Dec 3 15:47:15 xxx dovecot: imap(xxx)<28251><TOSxmj7SPRYloY5/>: Warning: Maildir /mnt/mail-storage-lv0007/xxx/Maildir: Expunged message reappeared, giving a new UID (old uid=233140, file=1638540323.M588041P27708.xxx,S=84376,W=85507:2,) The user delete the message and then the message reappears into mail client after one second. Does anybody knows how can I fix it? Thanks in advance Regards

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Re: new bee needs starter docs
by Gene Heskett 03 Dec '21

03 Dec '21

On Fri, 3 Dec, 2021 at 3:50 AM, Christian Mack <christian.mack(a)uni-konstanz.de> wrote: To: dovecot(a)dovecot.org Hello What you need is probably 'doveadm sync'. Check its manual with man doveadm-sync I did, that's equ to my climbing El Capitan at 87 yo. 'taint gonna happen. So I think I'll try to make my old method work, so back to the kde-pim list. Kind regards, Christian Mack Thank you Christian

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Issue with SCRAM-SHA Authorization
by Thomas Schmid 03 Dec '21

03 Dec '21

Hi, I was debugging a bug report for my sieve editor implementation concerning an issue with SCRAM-SHA Authorization. But I am a bit unsure about my findings. It seems to be a server side bug. But I am wondering if I missed something. What puzzles me a bit is that SCRAM-SHA is out since ages and obviously no one ran into this issue. Which feels odd. When I try to connect to a dovecot server with enabled Authorization, then SCRAM SHA1 or SHA256 fail with a channel binding error. Authorization via SASL PLAIN works perfectly fine. So I digged into the logs. The trace is below also my findings/conclusion. The username and authorization in the trace are set to "user" the password is "pencil". Nov 24 14:00:06 auth: Debug: client in: AUTH 1 SCRAM-SHA-256 service=sieve secured=tlssession=sI9yRonRZISsEQAB lip=172.17.0.2 rip=172.17.0.1 lport=4190 rport=33892 resp=bixhPXVzZXIsbj11c2VyLHI9ZmEzZGY1NjNlZjczZTY3YjQzZThhZWRiZjUzNGI1NWIxNzIwNzU3OThjZmJiMjExNmMyMTNkMWM4NDE4MmZkOQ== (previous base64 data may contain sensitive data) Nov 24 14:00:06 auth: Debug: passwd-file(user,172.17.0.1,<sI9yRonRZISsEQAB>): Performing passdb lookup Nov 24 14:00:06 auth: Debug: passwd-file(user,172.17.0.1,<sI9yRonRZISsEQAB>): lookup: user=user file=/etc/dovecot/users Nov 24 14:00:06 auth: Debug: passwd-file(user,172.17.0.1,<sI9yRonRZISsEQAB>): Generating SCRAM-SHA-256 from user 'user', password 'pencil' Nov 24 14:00:06 auth: Debug: passwd-file(user,172.17.0.1,<sI9yRonRZISsEQAB>): Finished passdb lookup Nov 24 14:00:06 auth: Debug: Credentials: 343039362c326b3934364452546c326431765a37434b6d556c32513d3d2c46444d364f7173577035464c446e394151666554316547585045427a47566d6965673842427331456d37633d2c79766e5a4169376250392f59706c4a71597872356a79794f7a6e4c664730667636485155325a7a6975376b3d Nov 24 14:00:06 auth: Debug: client passdb out: CONT 1 cj1mYTNkZjU2M2VmNzNlNjdiNDNlOGFlZGJmNTM0YjU1YjE3MjA3NTc5OGNmYmIyMTE2YzIxM2QxYzg0MTgyZmQ5J2Q9NCskV2NuWEFVTnZxOU1EZENgM2UheVguXFw3O2JgKlg0X29gKDtBXnJrTi1xUmQ2IXgiQX5+eGU8ZlJHWSxzPTJrOTQ2RFJUbDJkMXZaN0NLbVVsMlE9PSxpPTQwOTY= Nov 24 14:00:06 auth: Debug: client in: CONT 1 Yz1iaXhoUFhWelpYSXMscj1mYTNkZjU2M2VmNzNlNjdiNDNlOGFlZGJmNTM0YjU1YjE3MjA3NTc5OGNmYmIyMTE2YzIxM2QxYzg0MTgyZmQ5J2Q9NCskV2NuWEFVTnZxOU1EZENgM2UheVguXFw3O2JgKlg0X29gKDtBXnJrTi1xUmQ2IXgiQX5+eGU8ZlJHWSxwPUcvZGZWUUlGZy9NMkpSMlpEMXM0cms4MS9jTmFMa0tuMzZFYzFlTTN1enc9 (previous base64 data may contain sensitive data) Nov 24 14:00:06 auth: Info: scram-sha-256(user,172.17.0.1,<sI9yRonRZISsEQAB>): Invalid channel binding data Nov 24 14:00:06 auth: Debug: auth(user,172.17.0.1,<sI9yRonRZISsEQAB>): Auth request finished Nov 24 14:00:08 auth: Debug: client passdb out: FAIL 1 user=user Nov 24 14:00:08 managesieve-login: Info: Disconnected: Aborted login by logging out (auth failed, 1 attempts in 2 secs): user=<user>, method=SCRAM-SHA-256, rip=172.17.0.1, lip=172.17.0.2, TLS, session=<sI9yRonRZISsEQAB> Nov 24 14:00:08 managesieve-login: Debug: SSL alert: close notify The matching trace from the client, a sieve editor (https://github.com/thsmi/sieve) is as follows: [15:000:06.192 kw53213a-qc7kf99m1lp] Client -> Server: AUTHENTICATE "SCRAM-SHA-256" "bixhPXVzZXIsbj11c2VyLHI9ZmEzZGY1NjNlZjczZTY3YjQzZThhZWRiZjUzNGI1NWIxNzIwNzU3OThjZmJiMjExNmMyMTNkMWM4NDE4MmZkOQ==" [15:000:06.202 kw53213a-qc7kf99m1lp] Server -> Client "cj1mYTNkZjU2M2VmNzNlNjdiNDNlOGFlZGJmNTM0YjU1YjE3MjA3NTc5OGNmYmIyMTE2YzIxM2QxYzg0MTgyZmQ5J2Q9NCskV2NuWEFVTnZxOU1EZENgM2UheVguXFw3O2JgKlg0X29gKDtBXnJrTi1xUmQ2IXgiQX5+eGU8ZlJHWSxzPTJrOTQ2RFJUbDJkMXZaN0NLbVVsMlE9PSxpPTQwOTY=" [15:000:06.209 kw53213a-qc7kf99m1lp] Client -> Server: "Yz1iaXhoUFhWelpYSXMscj1mYTNkZjU2M2VmNzNlNjdiNDNlOGFlZGJmNTM0YjU1YjE3MjA3NTc5OGNmYmIyMTE2YzIxM2QxYzg0MTgyZmQ5J2Q9NCskV2NuWEFVTnZxOU1EZENgM2UheVguXFw3O2JgKlg0X29gKDtBXnJrTi1xUmQ2IXgiQX5+eGU8ZlJHWSxwPUcvZGZWUUlGZy9NMkpSMlpEMXM0cms4MS9jTmFMa0tuMzZFYzFlTTN1enc9" [15:000:08.215 kw53213a-qc7kf99m1lp] Server -> Client NO "Authentication failed." According to the RFC (https://datatracker.ietf.org/doc/html/rfc5802) the initial request is defined as: (("p=" cb-name) / "n" / "y") "," [ authzid ] "," client-first-message-bare This means the decoded message from the trace is: n,a=user,n=user,r=fa3df563ef73e67b43e8aedbf534b55b172075798cfbb2116c213d1c84182fd9 The final request (which is rejected by the server with the binding error) is defined as : client-final-message-without-proof = channel-binding "," nonce [","extensions] or client-final-message = client-final-message-without-proof "," proof So the request from the trace decodes into: c=bixhPXVzZXIs,r=fa3df563ef73e67b43e8aedbf534b55b172075798cfbb2116c213d1c84182fd9'd=4+$WcnXAUNvq9MDdC`3e!yX.\\7;b`*X4_o`(;A^rkN-qRd6!x"A~~xe<fRGY,p=G/dfVQIFg/M2JR2ZD1s4rk81/cNaLkKn36Ec1eM3uzw= The channel-binding and cbind-input part are defined as: channel-binding = "c=" base64(cbind-input) cbind-input = (("p=" cb-name) / "n" / "y") "," [ authzid ] "," [ cbind-data ] where cbind-data has to be absent by definition as dovecot does not support channel binding so no "p=" is possible and thus no cbind-data. This means c=bixhPXVzZXI decodes into. n,a=user, And this is where it gets strange. The dovecot code section which throws the error, implements the following: https://github.com/dovecot/core/blob/a5209c83c3a82386c94d466eec5fea394973e8… cbind_input = t_strconcat(request->gs2_cbind_flag, ",,", NULL); str = t_str_new(MAX_BASE64_ENCODED_SIZE(strlen(cbind_input))); str_append(str, "c="); base64_encode(cbind_input, strlen(cbind_input), str); if (strcmp(fields[0], str_c(str)) != 0) { *error_r = "Invalid channel binding data"; return FALSE; } As you can see it uses the bind flag which was saved to the request. But instead of the authzid, it uses always an hardcoded empty string. Thus cbind-input is "n,," instead of "n,a=user," and results in the request being rejected with an "Invalid channel binding data". Which is on the one hand a funny message because dovecot does not support channel binding at all, as describe in https://github.com/dovecot/core/blob/a5209c83c3a82386c94d466eec5fea394973e8… but it also on the other hand somehow correct because cbind-input string does not match. Which is an illegal state during channel binding negotiation which should not happen. As said previously, it looks to me like a server side bug. Or did I miss something special case in the RFC? Kind Regards Thomas Schmid

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LDAP Help
by Günther J. Niederwimmer 03 Dec '21

03 Dec '21

Hello Dovecot professionals, I have a working user authentication with LDAP, now I want to allow the users to use mailAterneteAddress for their account, unfortunately I can't find any filter settings for dovecot that this works? I just can't find the right settings for LDAP (FreeIPA). Does anyone of you have any hints or links so that I can get on with it. Somehow I don't understand how I can umconvigure the dovecot-ldap.conf.ext Thank you for your help. -- mit freundlichen Grüßen / best regards Günther J. Niederwimmer

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new bee needs starter docs
by Gene Heskett 03 Dec '21

03 Dec '21

Greetings all' Brand New today install of debian bullseye. I have looked at you doc pages, but don't see a good tut for a newbie to use for setting it up the first time ever. I have version 2.3.13 (89f716dc2) from the debian bullseye distro. What I want is to pull from my ISP account, which is also running dovecot, to a local mailfile. Or I can do that with fetchmail, its been doing that for a decade already. Its currently using procmail to run stuff thru spamassassin and clamd depositing the survivors into a /var/mail/mailfile, which the older tde kmail then pulled and sorted into folders holding maildirs. But I can't get tde to install on bullseye. Kudo's for any help you can supply. Cheers, Gene

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execve(/usr/bin/sieve-test) failed: Argument list too long
by Patrick Cernko 03 Dec '21

03 Dec '21

Hi Dovecot developers, while debugging the above error message from sieve-test, I found out, that the content of directive ssl_ca is added as env var SSL_CA by doveconf on execve and sieve-test now uses doveconf. In our setup, ssl_ca is set to ssl_ca = </etc/ssl/certs/ca-certificates.crt on our director servers. We have backend servers with certificates signed by two different CAs and to avoid problems if a backend switches to a different CA, I decided to allow all "known" CAs. The corresponding env var SSL_CA has more than 230500 bytes, which causes execve to fail with error E2BIG. I found a workaround for the problem by setting ssl_ca = </etc/dovecot/backendCAs.pem Where this file contains only the two CAs used atm. However I would like to request a fix for this issue as others might also want to have all "known" CAs set for dovecot director backend connections. Best, -- Patrick Cernko <pcernko(a)mpi-klsb.mpg.de> +49 681 9325 5815 Joint Administration: Information Services and Technology Max-Planck-Institute fuer Informatik & Softwaresysteme

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DoveCot Virtual Mailboxes With MySql
by postfix＠aecperformance.com 03 Dec '21

03 Dec '21

PLEASE HELP - Dovecot Virtual Mailboxes Using MySql I have a thread detailing my problem with config here: https://ubuntuforums.org/showthread.php?t=2469564 VPS Ubuntu 20.04 postfix 3.4.13 and dovecot 2.3.7.2 I've got multiple domains each having multiple emails. I'm using Virtual Mailboxes and MySql. My first domain: softlinksys.com has an MX pointing at mail.softlinksys.com. You can easily verify it. The IP address shown on https://mxtoolbox.com/ is: 194.163.45.150 <https://mxtoolbox.com/SuperTool.aspx?action=mx%3asoftlinksys.com&run=toolpa ge> which is my VPS IP address. I have a virtual_domains record in mysql with softlinksys.com as the domain. I have an email address mailadm(a)softlinksys.com <mailto:mailadm@softlinksys.com> in virtual_users in mysql. In the client app: Thunderbird the imap server is set as mail.softlinksys.com I can't connect that user to the mailbox from Thunderbird. If I change the imap server in Thunderbird to softlinksys.com the mailbox will connect I can't send an email to mailadm(a)softlinksys.com <mailto:mailadm@softlinksys.com> . It bounces whether MySql virtual_domains.name = softlinksys.com or mail.softlinksys.com. I've tried both softlinksys.com and mail.softlinksys.com in the database record and in Thunderbird. I just can't make it work. PLEASE HELP! How can I resolve this problem? Kristy Atkins ViviData SaaS

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