Problems with idle pop3 connections locking mailboxes

Michael Sims michaels at
Fri Jun 18 16:14:55 EDT 2004

Michael Sims wrote:
> I'm having a strange problem with pop3d connections hanging that I
> was hoping to get some feedback on (system vitals are at the bottom
> of this message).
> [root at mail root]# strace -p23604
> Process 23604 attached - interrupt to quit
> write(1, "/mYYyaenY9KvRwAahzCYCiPwGiWHtz7A"..., 584

Sorry to followup to my own message, but I have more information, and a much simpler
question to ask this time. :)  This exact same user caused another pop process to
hang up, downloading the same message as before.  strace again revealed it was stuck
in the middle of a write.  My question is, is there any way I can via a script
determine if a pop3 process has been stuck in this state for a while?  If I can I
suppose I could just write a script to check for this every hour or so and restart
cyrus if necessary.  Does anyone have any suggestions/ideas towards this end?  Also,
has the behavior of the pop3 daemon changed significantly between the 2.1 series and
2.2?  I'd upgrade to 2.2 if I knew it'd help this situation.  Thanks very much...

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