Filter on

Kevin Houle kevin at
Wed Sep 24 19:18:43 UTC 1997

On Wed, 24 Sep 1997 14:45:01 -0400 (EDT)
Jared Mauch <jared at> wrote:

> Kevin.. it works if you give the proper machine name in the HELO

MCI's iNOC pretty much confirmed there was a filter in place,
as did the systems person I finally reached thanks to some
key responses from this list. Probably a spam relay block of
some kind. The '550 Access denied' reponse is that they use
in their SMTP filters. was down for 
two hours and counting when I got them on the phone, so with 
local MCI users not being able to send mail, I was not a high 
priority :)

At any rate, the 'HELO' statement is a result of
host masquerading ( Same thing happens with a

220 ESMTP Sendmail 8.8.5/8.8.5; Wed, 24 Sep 1997 15:16
:25 -0400 (EDT)
250 Hello kevin at [], pleas
ed to meet you
MAIL FROM:<kevin at>
550 Access denied


More information about the NANOG mailing list