Postfix vs MailScanner : Slow Incoming Queue
rwahyudi at gmail.com
Wed Nov 7 00:05:06 GMT 2007
We have bunch of postfix server to filter spam for incoming mail.
These servers sits in front of actual mail server.
For some reason mail delivery is slow because email is sitting in
for too long. Most of these files have 0700 permission.
I have read http://www.postfix.org/QSHAPE_README.html#incoming_queue
In the document it stated that :
"The main factors slowing down the queue manager are disk I/O and
lookup queries to the trivial-rewrite service. "
In my case, I think the disk and lookup queries are fast enough. Lookup
queries is done locally from
hash file. I also don't think there is no correlation between disk IO
utilization and the number of email in incoming queue.
postfix spool directory mounted on reiserfs partition with notail and
I asked postfix mailing list because I thought this is something to do
But their replay was short and sweet :
'Nuff said, you are using Mailscanner. Stop using Mailscanner and the
problem will go away. Mailscanner has a long history of causing various
similar issues, it is not supported here.
Can anyone give me suggestion on how to speed this up ?
Anyone experiencing same issue with mailscanner ?
Disk IO Graph :
Postfix Graph :
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the MailScanner