Re: [courier-users] Courier MTA Problem

[Sam V. <mr...@co...>]

Steve Lange writes:

> After around 8 hours of uptime, the IMAP server stops showing messages.  
> When you login to SquirrelMail, it will display the error message 
> "connection dropped by imap server".  Our ThunderBird users will just 
> say "connecting to imap server".  However, when I telnet into the smtp 
> or imap servers I am authenticated but the command "examine inbox" will 
> not work until I reboot the server.

Define "will not work".  You could mean that there's no response from the 
server, or the examine gets bounced back with some error.

From the context, you probably mean no response.  This sounds like a 
resource issue with your system.  Especially since you've mentioned that 
you're running RHEL4, which is fresh out of the oven, and hasn't been 
battle-tested; especially since a reboot clears everything up.  You're 
probably running out of something: memory, or swap space, or something else.

This is what system administrators get paid for: to analyze what's ailing, 
and what's running low, and what to do about it.  You'll need to run through=
 
the usual suspects -- run top, vmstat, et al, to see what's going on.  If 
you're looking at a hung imapd process, use strace to find out what it's 
going, etc=E2=80=A6


> 
> Thanks,
> Steve
> 
> 
> 
> Sam Varshavchik wrote:
> 
>> Steve Lange writes:
>>
>>> However, after about 8 hours of uptime, Courier stops accepting 
>>> requests and becomes incredibly slow.  Has anyone seen this before?  
>>> Once I 
>>
>>
>> Define "stops accepting requests", specifically:  IMAP, POP3, or SMTP 
>> requests.
>>
>>> I turned on auth debugging and found this error message:
>>>
>>> courierd: SHUTDOWN: respawnlo limit reached, system inactive
>>> courierd: Loading STATIC transport module libraries
>>
>>
>> This is a normal message, and does not indicate that anything's wrong.
>>
> 
> -- 
> 
> Thank You,
> Steve
> 
> Steve Lange
> Network Planning Analyst
> Michael Day Enterprises
> Phone: 330-336-7611
> 960 Seville Rd.
> Wadsworth, Ohio 44281
> www.mdayinc.com
> 
> 
> 
> 
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