A NOTE has been added to this issue. 
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http://dbmail.org/mantis/view.php?id=1027 
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Reported By:                Bloody
Assigned To:                
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Project:                    DBMail
Issue ID:                   1027
Category:                   POP3 daemon
Reproducibility:            random
Severity:                   major
Priority:                   normal
Status:                     new
target:                      
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Date Submitted:             31-Oct-13 12:36 CET
Last Modified:              06-Dec-13 06:45 CET
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Summary:                    POP3 daemon stop serving connections
Description: 
DBMail last from svn, gmime 2.6.19, other dbmail daemons not affected.

POP3 daemon stop serving connections, telnet show success connect, but
banner not sent by server.
Process dbmail-pop3d eating 100% CPU.
====================================================================== 

---------------------------------------------------------------------- 
 (0003604) Bloody (reporter) - 20-Nov-13 09:54
 http://dbmail.org/mantis/view.php?id=1027#c3604 
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imapd also affected :(
Both daemons not responde to SIG 15, only one way - SIG 9

 

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 (0003613) abrus (reporter) - 03-Dec-13 13:24
 http://dbmail.org/mantis/view.php?id=1027#c3613 
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At our Server same Problem. But hopefully same problem as: 1029
Did you verify that lsof -i lists several open Sockets with (CLOSE_WAIT)
status while pop3d or imapd is at 100% CPU? 

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 (0003617) Bloody (reporter) - 03-Dec-13 16:50
 http://dbmail.org/mantis/view.php?id=1027#c3617 
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today, 
ESTABLISHED - 33 connections
CLOSE_WAIT - 8 connection
imapd hangs, after kill -9 
segfault at 10 ip 00007f001d7f9a70 sp 00007fff59592d28 error 4 in
libpthread-2.17.so[7f001d7f0000+16000] 

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 (0003618) Bloody (reporter) - 04-Dec-13 12:19
 http://dbmail.org/mantis/view.php?id=1027#c3618 
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updated to last svn
still have hangups, but now without CLOSE_WAIT connections on imap 

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 (0003619) Bloody (reporter) - 06-Dec-13 06:45
 http://dbmail.org/mantis/view.php?id=1027#c3619 
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updated, after commit 92a94ed9054b4f7acd8715697b79591034bc2603, and 24 hour
of testing in production, POP3 daemon - not hanging, IMAP still hanging
with same symptoms (with no connections in state CLOSE_WAIT) 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
31-Oct-13 12:36  Bloody         New Issue                                    
31-Oct-13 15:09  Bloody         Note Added: 0003604                          
20-Nov-13 09:54  Bloody         Note Edited: 0003604                         
03-Dec-13 13:24  abrus          Note Added: 0003613                          
03-Dec-13 16:50  Bloody         Note Added: 0003617                          
04-Dec-13 12:19  Bloody         Note Added: 0003618                          
06-Dec-13 06:45  Bloody         Note Added: 0003619                          
======================================================================

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