Darren,

If I change my port 25 rule from:

pass in quick proto tcp from any to 137.146.28.72 port = 25 flags S keep state keep frags pass out quick proto tcp from 137.146.28.72 to any port = 25 flags S keep state keep frags

to:

pass in  quick proto tcp from any to 137.146.28.72 port = 25
pass out quick proto tcp from 137.146.28.72 to any port = 25

Then all/most of my email traffic halts.  I am using Sun multipathing,
and there is some kind of interaction between ipfilter, keep state, and
the two interfaces (one of which should be silent, but isn't).  I had
similar issues with my webmail servers, a person in Australia, and a
VPN connection from there.  In that case, the problem was fixed by adding
"flags S keep state" to my port 80/443 ipfilter lines.

Still puzzling over my rules...

Jeff Earickson
Colby College

On Mon, 5 Mar 2007, Darren Reed wrote:

Date: Mon, 05 Mar 2007 23:04:30 -0800
From: Darren Reed <[EMAIL PROTECTED]>
To: Jeff A. Earickson <[EMAIL PROTECTED]>
Cc: [email protected]
Subject: Re: insight on S10 ipfilter patch 125014-02?

Jeff,

if you use stateless filtering for por 25, does that solve your problem?

darren

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