[Mimedefang] OT: sendmail limit connections
-ray
ray at ops.selu.edu
Fri Feb 25 17:43:15 EST 2005
On Fri, 25 Feb 2005, Matthew S. Cramer wrote:
> I implemented months ago and slowly increased the pause up to
> 1250 ms. I wanted to avoid any false positives (I have had none) and
> found that any further increase in the pause doesn't substantially
> increase the amount of rejections.
>
> We hit about 125,000-150,000 rejections due to the pause, per month.
I upgraded sendmail last night and started with a greet_pause of 5
seconds. I think a legit mailserver can wait 5 seconds for the
220...sometimes dns takes longer than that! The biggest pain is my access
map is in LDAP so i had to remember howto create ldap objects, haha.
I also added ConnControl limit of 15. I don't think there's a legit
reason for any one host to open more than 15 tcp connections. Comments?
ray
--
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Ray DeJean http://www.r-a-y.org
Systems Engineer Southeastern Louisiana University
IBM Certified Specialist AIX Administration, AIX Support
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