MailScanner can't keep up

Julian Field MailScanner at
Wed Feb 22 18:56:58 GMT 2006

Hash: SHA1

Drew Burchett wrote:
> I have MailScanner 4.5 set up on Suse Linux 10.0 use
> Postfix 2.2.3 as an MTA.  Messages are being received
> fine, but MailScanner is choking on the volume trying
> to process them.  According to MailWatch, I am
> averaging receiving 700 messages per hour to be
> scanned (tons more are being delivered, but filtered
> by Postfix).  On average, MailScanner is reporting
> taking about 900 seconds per 15 message batch.  I have
> it limited to 10 child processes.  The server it is
> running on is a 3.0 Ghz with 512 Mb memory and a 40Gig
> SCSI hard drive divided into three partitions.  If you
> need any other informaiton to help me diagnose this
> problem, please let me know and I'll be glad to post it.
Add more RAM. With 10 child processes (I would advise 5 per CPU) you 
will need 2Gb of RAM. I bet that "vmstat 5" reports it is swapping like 
crazy (look for the si and sout figures). My advice is 5 children and 
1GB RAM per CPU. Hyper-threaded processes still count as 1.

RAM is cheap, go buy a shed load more.

- -- 
Julian Field
Buy the MailScanner book at
Professional Support Services at
MailScanner thanks transtec Computers for their support

PGP footprint: EE81 D763 3DB0 0BFD E1DC 7222 11F6 5947 1415 B654

Version: PGP Desktop 9.0.5 (Build 5050)


This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.

More information about the MailScanner mailing list