Re: dovecot: imap Error: read : Broken pipe
I forgot to mention that if I transfer the mail to my Gmail or Outlook address I can download the attachments without any problem. More over I've completely removed the firewall server from the equation, I plugged the adsl line directly into the mail server and the problem is still there, so my guess is that the firewall isn't the problem here.
I'll do the pcaps for Aki
Thanks for your help
On 06/11/2018 02:20, dovecot-request@dovecot.org wrote:
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Today's Topics:
- imap authentication - shadow vs mysql (Konra Wawryn)
- Re: imap authentication - shadow vs mysql (Ralph Seichter)
- Re: Event 0x2b1a5f270bd0 leaked (parent=(nil)): auth-client-connection.c:338 (Michael Slusarz)
- dovecot: imap Error: read : Broken pipe (Carl St-Laurent)
- Re: dovecot: imap Error: read : Broken pipe (Felipe Gasper)
- Re: dovecot: imap Error: read : Broken pipe (Aki Tuomi)
- Re: Event 0x2b1a5f270bd0 leaked (parent=(nil)): auth-client-connection.c:338 (Mart Pirita)
- Re: Event 0x2b1a5f270bd0 leaked (parent=(nil)): auth-client-connection.c:338 (Aki Tuomi)
Message: 1 Date: Mon, 05 Nov 2018 13:45:48 +0100 From: Konra Wawryn <konrad.wawryn@virtual-machine.org> To: dovecot@dovecot.org Subject: imap authentication - shadow vs mysql Message-ID: <13e143d52fb2f094a285306ccbdec990@virtual-machine.org> Content-Type: text/plain; charset=US-ASCII; format=flowed
Hi,
I`m looking for some opinions about authentication process for the systems with more than 1000 E-mail accounts. Maybe some one could advise me what is the best authentication method.
At the moment I
m storing all passwords in my /etc/passwd. My IMAP server is growing and Im planning to build new host, my question is: what is the best authentication model for IMAP server ? Do I need to store all user/passwords in mysql or maybe in LDAP ?I`m searching for some solution which will help me to scale my system in the future.
Maybe some one could advice me ?
Greetings
Konrad
Message: 2 Date: Mon, 05 Nov 2018 14:21:39 +0100 From: Ralph Seichter <m16+dovecot@monksofcool.net> To: dovecot@dovecot.org Subject: Re: imap authentication - shadow vs mysql Message-ID: <m2k1lrek2k.fsf@argon.seichter.de> Content-Type: text/plain
- Konra Wawryn:
I`m searching for some solution which will help me to scale my system in the future.
You provided very little information about your requirements, and "to scale" is just as vague a term. Hence, I recommend an LDAP server, because it works in many scenarios, can accommodate thousands of users, and is basically the default solution for this type of write-seldom- read-often type of user data storage.
As for MySQL, I would personally not use it for authentication unless I had no other option.
-Ralph
Message: 3 Date: Mon, 5 Nov 2018 10:42:14 -0700 (MST) From: Michael Slusarz <michael.slusarz@open-xchange.com> To: Mart Pirita <sysadmin@e-positive.ee>, dovecot@dovecot.org Subject: Re: Event 0x2b1a5f270bd0 leaked (parent=(nil)): auth-client-connection.c:338 Message-ID: <750544780.12327.1541439735168@appsuite.open-xchange.com> Content-Type: text/plain; charset=UTF-8
On November 3, 2018 at 9:41 AM Mart Pirita <sysadmin@e-positive.ee> wrote:
Hi,
But this harmless is spamming logs, so how to disable it:
grep auth-client-connection.c:338 maillog | wc -l ?? 1259
If using something like rsyslog, it is trivial to filter out unwanted entries.
michael
Aki Tuomi wrote:
On 03 November 2018 at 12:12 Mart Pirita < sysadmin@e-positive.ee <mailto:sysadmin@e-positive.ee>> wrote:
Hi,
Noticed with latest v2.3.3 some new warning in logs, for example:
dovecot: auth: Warning: Event 0x80a6fc0 leaked (parent=(nil)): auth-client-connection.c:338: 1 Time(s) dovecot: auth: Warning: Event 0x80aa1c8 leaked (parent=(nil)): auth-client-connection.c:338: 1 Time(s) dovecot: auth: Warning: Event 0x80aa718 leaked (parent=(nil)): auth-client-connection.c:338: 1 Time(s) dovecot: auth: Warning: Event 0x80adac0 leaked (parent=(nil)): auth-client-connection.c:338: 1 Time(s) dovecot: auth: Warning: Event 0x80b6c38 leaked (parent=(nil)): auth-client-connection.c:338: 1 Time(s) dovecot: auth: Warning: Event 0x80c0e00 leaked (parent=(nil)): auth-client-connection.c:338: 1 Time(s) dovecot: auth: Warning: auth client 0 disconnected with 1 pending requests: EOF: 12 Time(s)
What are they?
-- Mart
Hi! It's harmless event leak. This is a known issue to us.
Message: 4 Date: Mon, 05 Nov 2018 18:19:26 -0500 From: Carl St-Laurent <stlauca@a3d-concept.com> To: dovecot@dovecot.org Subject: dovecot: imap Error: read : Broken pipe Message-ID: <1700cf4385e77a60415db96fa1c586ac@a3d-concept.com> Content-Type: text/plain; charset=US-ASCII; format=flowed
Hi everyone,
I'm trying to find a solution for this bug who appears 2 months ago :
dovecot: imap(%USER%): Error: read(<binary stream of mailbox INBOX UID (%d)>) failed: Broken pipe (FETCH BINARY[2] for mailbox INBOX UID (%d)
Where %USER% is the unix user and %d the UID of the mailbox.
This error appears each time a user tries to download an attachment from one of his emails. Whether with RoundCube or Thunderbird via VPN or not. I thought that it was related to my firewall but no. Furthermore the problem isn't present when users are at the office. Upload speed from our ADSL connection is pretty slow about 1mpbs, I thought maybe it was related but it was working fine since 2 years. So I'm really short of ideas.
Anyone could help me please ?
Best regards, Carl
# 2.2.27 (c0f36b0): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.16 (fed8554) # OS: Linux 4.9.0-7-amd64 x86_64 Debian 9.5 auth_mechanisms = plain login disable_plaintext_auth = no mail_location = maildir:~/Maildir namespace inbox { inbox = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = } passdb { driver = pam } plugin { sieve = file:~/sieve;active=~/.dovecot.sieve sieve_after = /etc/dovecot/sieve-after } protocols = imap imap service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } } service imap-login { inet_listener imap { port = 0 } inet_listener imaps { port = 993 ssl = yes } } ssl = required ssl_ca = </etc/ssl/mail/****.pem ssl_cert = </etc/ssl/mail/****.pem ssl_key = # hidden, use -P to show it userdb { driver = passwd } protocol lmtp { mail_plugins = sieve } protocol lda { mail_plugins = sieve }
Message: 5 Date: Mon, 5 Nov 2018 19:28:45 -0500 From: Felipe Gasper <felipe@felipegasper.com> To: Dovecot Mailing List <dovecot@dovecot.org> Subject: Re: dovecot: imap Error: read : Broken pipe Message-ID: <AAAEBE0C-AF9E-41A4-9BB4-668667E2531D@felipegasper.com> Content-Type: text/plain; charset=utf-8
On Nov 5, 2018, at 6:19 PM, Carl St-Laurent <stlauca@a3d-concept.com> wrote:
Hi everyone,
I'm trying to find a solution for this bug who appears 2 months ago :
dovecot: imap(%USER%): Error: read(<binary stream of mailbox INBOX UID (%d)>) failed: Broken pipe (FETCH BINARY[2] for mailbox INBOX UID (%d)
That looks a bit goofy ? read() should never produce EPIPE, AFAIK?
-F
Message: 6 Date: Tue, 6 Nov 2018 08:30:54 +0200 From: Aki Tuomi <aki.tuomi@open-xchange.com> To: Dovecot Mailing List <dovecot@dovecot.org>, Carl St-Laurent <stlauca@a3d-concept.com> Subject: Re: dovecot: imap Error: read : Broken pipe Message-ID: <2a43ea13-d043-fd45-119c-0e3e1b8d29cd@open-xchange.com> Content-Type: text/plain; charset=utf-8
On 6.11.2018 2.28, Felipe Gasper wrote:
On Nov 5, 2018, at 6:19 PM, Carl St-Laurent <stlauca@a3d-concept.com> wrote:
Hi everyone,
I'm trying to find a solution for this bug who appears 2 months ago :
dovecot: imap(%USER%): Error: read(<binary stream of mailbox INBOX UID (%d)>) failed: Broken pipe (FETCH BINARY[2] for mailbox INBOX UID (%d) That looks a bit goofy ? read() should never produce EPIPE, AFAIK?
-F
It is bit strange that you are not experiencing this problem at the office, but only from remote location(s). This does turn the pointing finger towards firewall (despite what you said). Can you take pcaps from this, since it seems to be reproducible and send them to me privately?
Aki
Message: 7 Date: Tue, 6 Nov 2018 08:57:23 +0200 From: Mart Pirita <sysadmin@e-positive.ee> To: dovecot@dovecot.org Subject: Re: Event 0x2b1a5f270bd0 leaked (parent=(nil)): auth-client-connection.c:338 Message-ID: <c2cc829e-c66a-73b9-2968-194e8add49ab@e-positive.ee> Content-Type: text/plain; charset=windows-1252
Hi,
I'm not using rsyslog and instead of hiding, this event leak should be fixed.
Michael Slusarz wrote:
On November 3, 2018 at 9:41 AM Mart Pirita <sysadmin@e-positive.ee> wrote:
Hi,
But this harmless is spamming logs, so how to disable it:
grep auth-client-connection.c:338 maillog | wc -l ?? 1259 If using something like rsyslog, it is trivial to filter out unwanted entries.
michael
Aki Tuomi wrote:
On 03 November 2018 at 12:12 Mart Pirita < sysadmin@e-positive.ee <mailto:sysadmin@e-positive.ee>> wrote:
Hi,
Noticed with latest v2.3.3 some new warning in logs, for example:
dovecot: auth: Warning: Event 0x80a6fc0 leaked (parent=(nil)): auth-client-connection.c:338: 1 Time(s) dovecot: auth: Warning: Event 0x80aa1c8 leaked (parent=(nil)): auth-client-connection.c:338: 1 Time(s) dovecot: auth: Warning: Event 0x80aa718 leaked (parent=(nil)): auth-client-connection.c:338: 1 Time(s) dovecot: auth: Warning: Event 0x80adac0 leaked (parent=(nil)): auth-client-connection.c:338: 1 Time(s) dovecot: auth: Warning: Event 0x80b6c38 leaked (parent=(nil)): auth-client-connection.c:338: 1 Time(s) dovecot: auth: Warning: Event 0x80c0e00 leaked (parent=(nil)): auth-client-connection.c:338: 1 Time(s) dovecot: auth: Warning: auth client 0 disconnected with 1 pending requests: EOF: 12 Time(s)
What are they?
-- Mart Hi! It's harmless event leak. This is a known issue to us.
-- Mart
Message: 8 Date: Tue, 6 Nov 2018 09:20:22 +0200 From: Aki Tuomi <aki.tuomi@open-xchange.com> To: Mart Pirita <sysadmin@e-positive.ee>, dovecot@dovecot.org Subject: Re: Event 0x2b1a5f270bd0 leaked (parent=(nil)): auth-client-connection.c:338 Message-ID: <4baea373-fbc3-e850-044c-d174c3a8c65b@open-xchange.com> Content-Type: text/plain; charset=windows-1252
It will be fixed.
Aki
On 6.11.2018 8.57, Mart Pirita wrote:
Hi,
I'm not using rsyslog and instead of hiding, this event leak should be fixed.
Michael Slusarz wrote:
On November 3, 2018 at 9:41 AM Mart Pirita <sysadmin@e-positive.ee> wrote:
Hi,
But this harmless is spamming logs, so how to disable it:
grep auth-client-connection.c:338 maillog | wc -l ?? 1259 If using something like rsyslog, it is trivial to filter out unwanted entries.
michael
Aki Tuomi wrote:
On 03 November 2018 at 12:12 Mart Pirita < sysadmin@e-positive.ee <mailto:sysadmin@e-positive.ee>> wrote:
Hi,
Noticed with latest v2.3.3 some new warning in logs, for example:
dovecot: auth: Warning: Event 0x80a6fc0 leaked (parent=(nil)): auth-client-connection.c:338: 1 Time(s) dovecot: auth: Warning: Event 0x80aa1c8 leaked (parent=(nil)): auth-client-connection.c:338: 1 Time(s) dovecot: auth: Warning: Event 0x80aa718 leaked (parent=(nil)): auth-client-connection.c:338: 1 Time(s) dovecot: auth: Warning: Event 0x80adac0 leaked (parent=(nil)): auth-client-connection.c:338: 1 Time(s) dovecot: auth: Warning: Event 0x80b6c38 leaked (parent=(nil)): auth-client-connection.c:338: 1 Time(s) dovecot: auth: Warning: Event 0x80c0e00 leaked (parent=(nil)): auth-client-connection.c:338: 1 Time(s) dovecot: auth: Warning: auth client 0 disconnected with 1 pending requests: EOF: 12 Time(s)
What are they?
-- Mart Hi! It's harmless event leak. This is a known issue to us.
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