[Mimedefang] OT: Blocking because of MX to 127.0.0.1

[Joseph Brennan]

--On Tuesday, March 9, 2004 8:57 AM -0600 Ben Kamen <bkamen at benjammin.net> 
wrote:

> One of the US ISP (Ameritech - now SBC) blocks mail if one of the MX
> records points to 127.0.0.1 (which as you know, some people do to have
> fun with the spammers who get blocked at the primary mail hub - so they
> send them to la la land on the next preference record up the stack.)
>
> I can't email anyone at SBC as the mail bounces back because my lowest
> pref MX record points to localhost.
>
> Has anyone else seen ISP's who block because of this?
>
> Are they being stupid or am I?
>
>   -Ben



We've received spam from domains that mx to 127.0.0.1 and if I see
much more of it, I'd like to do just what that ISP is doing, to get
the clutter out of our mail queues.

Joseph Brennan
Academic Technologies Group, Academic Information Systems (AcIS)
Columbia University in the City of New York