Re: Improvements in TCP/IP Services anti-spam features

From: John Johnstone (jj_usenet2_at_yahoo.com)
Date: 04/30/03 

Date: Tue, 29 Apr 2003 21:09:57 -0400

JF Mezei wrote:
>
> John Johnstone wrote:
> > longer valid. And it's incredibly ironic that the volume of mail being
> > sent to them is still on the increase.
>
> Have you considered using an RBL service ? TCPIP 5.3's SMTP is capable of
> interfacing to an RBL. This may give you more intelligent filtering based on
> the IP address of the sending SMTP host.

We were using RBLs but stopped due to upper management's concern about
the possibility of blocking legitimate mail. If it was just up to me,
I'd take that risk.

That reminds me of another problem. The reject error response from
TCP/IP Services for an RBL match doesn't have the capability to include
the name of the block list that matched in it. I can understand maybe
not wanting to provide that in the reject response that goes out to the
sending system, but it also isn't in the OPCOM message. That is really
critical in order to understand how your blocking is working.