I use Qmailtoaster (stock iso image install) as a front end spam/virus
scan for our Exchange system and recently we have started recieving a
large amount of non delivery errors to people outside of our domain
trying to send mail to us. Our mail volume is high.
The errors are all basicaly the same (examples below from forwards of
failed messages)
conversation with nxu02.ptr-online.COM[65.99.245.52] timed out while
receiving the initial server greeting
----- Transcript of session follows -----
451 4.4.1 reply: read error from nxu02.ptr-online.com.
<x...@domain>... Deferred: Connection timed out with
nxu02.ptr-online.com.
Message could not be delivered for 4 hours
Message will be deleted from queue
----- Transcript of session follows -----
451 4.4.1 reply: read error from nxu02.ptr-online.com.
x...@domain
... Deferred: Connection timed out with nxu02.ptr-online.com.
Message could not be delivered for 3 hours
Message will be deleted from queue
As I looked at some of the logs, I noticed the following happening alot:
from spamd logs:
@4000000049cb87e92a31cfac [2374] info: prefork: child states: BBBBB
@4000000049cb87e92a31d77c [2374] info: prefork: server reached
--max-children setting, consider raising it
I have no clue where to raise the child limits.
when I run top, the system has 1.2gig ram free all the time so I do not
think it is a memory issue.
Does anyone have any ideas? This is driving me nuts.
James Beam
Networking is more than just cables and connectoins...
