North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Filter on postoffice.reston.mci.net
FWIW I too see this when attempting from one address, but not from another. Both addresses are in MCI customer-owned ip blocks. Both addresses have correct double-reverse lookups. It's more than just a bit annoying ... especially when I receive mail from MCI's noc and cannot reply to it unless I go through hoops to route it through another box. Dean On Wed, 24 Sep 1997, Kevin Houle wrote: > On Wed, 24 Sep 1997 14:45:01 -0400 (EDT) > Jared Mauch <[email protected]> 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. postoffice.reston.mci.net 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 netins.net' statement is a result of > host masquerading (DMnetins.net). Same thing happens with a > FQDN : > > 220 postoffice.Reston.mci.net ESMTP Sendmail 8.8.5/8.8.5; Wed, 24 Sep 1997 15:16 > :25 -0400 (EDT) > HELO worf.netins.net > 250 postoffice.Reston.mci.net Hello [email protected] [167.142.225.4], pleas > ed to meet you > MAIL FROM:<[email protected]> > 550 Access denied > > Kevin >
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