Massive queue buildup

[Chandler, Jay]

Yeah, we used to run greylisting, but there's no way I'd condone it
here.

"Almost killed someone" seems a bit over the top, though... :-) 


--
Jay Chandler
Network Administrator, Chapman University
714.628.7249 / chandler at chapman.edu
Today's Excuse: Fluorescent lights are generating negative ions. If
turning them off doesn't work, take them out and put tin foil on the
ends. 

-----Original Message-----
From: mailscanner-bounces at lists.mailscanner.info
[mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf Of Brent
Addis
Sent: Monday, November 13, 2006 3:49 PM
To: MailScanner discussion
Subject: RE: Massive queue buildup

greylisting is bad and I will never ever run it. I know of one case
where greylisting has very nearly killed someone. They probably
shouldn't have been using email to do what they were, but thats not the
point.
 
greylisting adds an unnecessary delay to email, and can quite easilly be
beaten if a spammer sets his mind to it.

________________________________

From: mailscanner-bounces at lists.mailscanner.info on behalf of Damian
Mendoza
Sent: Tue 11/14/2006 12:45 PM
To: MailScanner discussion
Subject: RE: Massive queue buildup



Run a DNS server locally, add more memory/CPU, use Greylisting, process
mail using sender address verification before SA at the postfix or
sendmail level and use RBLs at the postfix or sendmail level.

 

That should get your server load down to 2.0 or lower to keep up with
your traffic.

 

 

Regards,


Damian Mendoza

Mission Viejo, CA

949 586-2200

 

 

________________________________

From: mailscanner-bounces at lists.mailscanner.info
[mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf Of Jay
Chandler
Sent: Monday, November 13, 2006 2:32 PM
To: mailscanner at lists.mailscanner.info
Subject: Massive queue buildup

 

Built my first Mailscanner / Postfix box on Friday due to a Sendmail
meltdown last week-- was forced to throw this box into production early.

 

It ran fine over the weekend, but today there's a massive queue buildup
when I run an mqueue-- 10K so far and building.

 

Any idea where to look to sort out where it's coming from?

 

It's possible the box itself is overloaded, 2 2.4 ghz procs, with a load
average of around 13.

 

Any guidance would be greatly appreciated.

 

-- 

Jay Chandler

Network Administrator, Chapman University

714-628-7249 / chandler at chapman.edu

"Bother," said Pooh as he struggled with /etc/sendmail.cf, "it never
does quite what I want.  I wish Christopher Robin was here." -- Peter Da
Silva in a.s.r.