Re: lda or lmtp for sieve?
If postfix is adding it, your not using lmtp. Only virtual and local adds it in postfix, lmtp is a symlink to smtp and does not add that header. If your somehow delivering the mail through local, then forwarding it again via lmtp, that would be a bad thing. Maybe look how you have spam/virus/... configured? Are they configured in some kind of loopback config using a lda that it shouldn't be using? I do know in older postfix versions (I haven't tested it in 3.x) if an email came into my postfix server with a return-path header, postfix would strip it out before delivering it via lmtp/smtp Quoting Michael Peddemors : On 2024-01-21 04:43, Patrick Domack via dovecot wrote: Quoting Benny Pedersen : Christian Kivalo skrev den 2024-01-21 02:08: Just wish LMTP would not end up with duplicate Return-Path headers.. Duplicate return path headers? I don't see them on my system. All mail is sent from postfix to dovecot with lmtp it simply works better with lda ? :) return-path is std postfix envelope sender pseudo header, bugs ? it's not a pseudo header, it is defined starting in rfc-822, as to be added at time of delievery. The LDA should add it, postfix lda add it (virtual/local) and dovecots do also (lda/lmtp) I have used most postfix versions from 2.1 to 3.8 and dovecot lda and lmtp and haven't have never seen duplicate headers Maybe it is just a Zimbra thing.. but we definitely see this occurring in the wild.. Maybe just poor configuration, but of course as per RFC, to be clear, is only supposed to be added by the 'final' delivery mechanism. So, the logic that implies duplicate Return-Path either indicates a broken system, looping issue, or email replay fails in those situations. Postfix adds... Return-path: Envelope-to: Delivery-date: Fri, 06 Oct 2023 08:56:07 -0300 After which it get handled by lmtp, which adds the following.. Return-Path: Delivered-To: Received: from by with LMTP id CMvDLNf1H2UcHQAAJRWI5g (envelope-from ) for ; Fri, 06 Oct 2023 08:56:07 -0300 I guess this is a double issue, postfix should know that in this case, it is not the final delivery, lmtp is.. and lmtp should probably either remove the previous Return-Path, or copy that to a new header.. since it was not supposed to be there (but that has ramifications too. -- "Catch the Magic of Linux..." Michael Peddemors, President/CEO LinuxMagic Inc. Visit us at http://www.linuxmagic.com @linuxmagic A Wizard IT Company - For More Info http://www.wizard.ca "LinuxMagic" a Reg. TradeMark of Wizard Tower TechnoServices Ltd. 604-682-0300 Beautiful British Columbia, Canada ___ dovecot mailing list -- dovecot@dovecot.org To unsubscribe send an email to dovecot-le...@dovecot.org ___ dovecot mailing list -- dovecot@dovecot.org To unsubscribe send an email to dovecot-le...@dovecot.org
Re: lda or lmtp for sieve?
Quoting Benny Pedersen : Christian Kivalo skrev den 2024-01-21 02:08: Just wish LMTP would not end up with duplicate Return-Path headers.. Duplicate return path headers? I don't see them on my system. All mail is sent from postfix to dovecot with lmtp it simply works better with lda ? :) return-path is std postfix envelope sender pseudo header, bugs ? it's not a pseudo header, it is defined starting in rfc-822, as to be added at time of delievery. The LDA should add it, postfix lda add it (virtual/local) and dovecots do also (lda/lmtp) I have used most postfix versions from 2.1 to 3.8 and dovecot lda and lmtp and haven't have never seen duplicate headers ___ dovecot mailing list -- dovecot@dovecot.org To unsubscribe send an email to dovecot-le...@dovecot.org
Re: Uncompress compressed messages in Maildir mailbox?
Is it possible that those mails are missing the S= and/or W= size
flags in the filename?
I remember that being a requirement (the S= part, not sure if W= was
required).
I have stopped using maildir many years ago, and my script made sure
S= was added to every email, where the script you linked to does not,
it assumes it already exists.
Quoting Alexander Chekalin :
Thank you!
Here is the whole problem I see:
as I saw how good it is to have messages compressed I used
https://github.com/George-NG/dovecot-maildir-compress script to
compress whole mailboxes and thus save more space on disk. Looks
like lock won't worked well so now I can see lines like that in
Dovecot logs:
Error: Mailbox ... : Deleting corrupted cache record uid=61: UID 61:
Broken virtual size in mailbox ... :
read(compress(/data/vmail/...)): FETCH BODY[] got too little data:
38910 vs 70020"
I tried to recover these messages by uncompress files with your
command, and I can say it was possible to uncompress some files
while others (the one that were reffered by these errors lines)
seems can't be recovered.
Seems like I have data lost in some messages and this is not
something I got used with dovecot which I use since pre-1.0 version.
P.S. I also tried gzip-ing messages so how have to ask you for the
command to un-gzip messages, as "doveadm fs get compress
gzip:6:posix:prefix=$PWD/ filename" seems not working for me.
On 17/01/2024 18:08 eetacheka...@lazurit.com wrote:
Some time ago I enabled compression on incoming messages, so LMTP
delivered messages were compressed. Good idea in terms of disk
space, but now I cannot uncompress any of these messages even when
I need to!
I was using this setting:
plugins {
zlib_save = lz4
}
and now I can see this string at the beginning of each message
file - "Dovecot-LZ4", so no other software can uncompress them for
me.
Please advise, how can I uncompress message file in Maildir
mailbox when I need to access its contents directly?
One simple way:
doveadm fs get compress lz4:6:posix:prefix=$PWD/ filename
Aki
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Re: Uncompress compressed messages in Maildir mailbox?
Not really recommended editing the mailstorage directly once you start
using dovecot custom stuff.
If you need to fetch a specific email, I use:
doveadm fetch -u u...@example.com text mailbox-guid $guid uid $uid
Quoting acheka...@lazurit.com:
Some time ago I enabled compression on incoming messages, so LMTP
delivered messages were compressed. Good idea in terms of disk
space, but now I cannot uncompress any of these messages even when I
need to!
I was using this setting:
plugins {
zlib_save = lz4
}
and now I can see this string at the beginning of each message file
- "Dovecot-LZ4", so no other software can uncompress them for me.
Please advise, how can I uncompress message file in Maildir mailbox
when I need to access its contents directly?
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