Re: Mail not bounced after a 5xx error

[Roy Bixler <rcb@ucp.uchicago.edu>]

On Mon, Apr 14, 2003 at 10:12:36PM +0300, Matti Aarnio wrote:
> Weird...    Code should be equivalent whatever version you are running,
> to be exact.
> 
> Perhaps this is data dependent, somehow.

We have a suspicious mail in our queue:

smtp/inco.com.lb:
<<- RCPT To:<ascertaisailorimprecis@inco.com.lb> NOTIFY=NEVER ORCPT=RFC822;ascer->> 503 5.5.0 No MAIL FROM command has been issued. (retry in 2m23s, expires in 1d1h, tries=217)

It turns out to be a bounced spam with the usual forged return
address.  The remote SMTP server is blocking mail with a blank sender
address:

MAIL FROM: <>
550 5.7.1 Blank sender address is not allowed!

As with the last problem, we are running the Debian package of
v. 2.99.55-3, which is essentially similar to plain v. 2.99.55.

Regards,

-- 
Roy Bixler <rcb@ucp.uchicago.edu>
The University of Chicago Press
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