RE: [NTISP] Spam Relay on Post.Office

Chris Kissinger ( )
Fri, 1 Sep 2000 11:19:19 -0700

You are allowing to relay based on info in the "From:" field
of the header. So the IP, or mail server name can be put in the email
address and allows it based on that.

To stop this you need to have "In general, restrict relay mail except as
indicated below: " dotted, and only the 1st box "Allow relay from these
IP addresses:" to be checked. Then list IP's allowed to relay.

Then in the second section "No domain except those listed below:" should
be dotted (by default) and neither of the boxes checked.

This will make it relay strictly by IP only. That is the only way to
really secure Post.Office.

-----Original Message-----
From: Greg Lowthian []
Sent: Friday, September 01, 2000 10:57 AM
Subject: [NTISP] Spam Relay on Post.Office

Can anyone tell me how and why ORBS can get through my mail server P.O.
Please don't make this a debate about ORBS.