North American Network Operators Group

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Re: tcsender email bombing

  • From: Jon Lewis
  • Date: Wed Nov 05 00:53:42 1997

On Tue, 4 Nov 1997, John-David Childs wrote:

> You may want to change your 451 errors into 571 errors at least for this
> particular domain.  From RFC1893:

Yep...changing those transient error codes into permenant ones will
severely discourage compliant MTA's.

I got a few dozen attempts from this one...but not enough that I'd have
noticed it over the other hundreds.

Nov  4 05:34:55 yoda sendmail[18159]: Ruleset check_mail
(<[email protected]>) rejection: 518
<[email protected]>... unresolvable host name, check your
configuration.
Nov  4 05:34:55 yoda sendmail[18159]: FAA18159:
from=<[email protected]>, size=0, class=0, pri=0, nrcpts=0,
proto=ESMTP, [email protected] [209.24.1.201]


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