Re: [cobalt-developers] A lot of bouncing mail

["Michael Zimmermann" <zim@xxxxxxxx>]

From: G Eppelin <geppelin@xxxxxxxxxxxx>
> I have a perl script that runs every evening that sends out email to
> subscribers. The next day I get tons of mail back from other mail servers.
> They contain something like this:
>    ----- Transcript of session follows -----
> ... while talking to blaze.cs.jhu.edu.:
> >>> MAIL From:<tbs@xxxxxxxxxxxxxxxxxxxxxxxxxxx> SIZE=896
> <<< 501 <tbs@xxxxxxxxxxxxxxxxxxxxxxxxxxx>... Sender domain must exist
> 501 Name of person <his@xxxxxxxxx>... Data format error

The server you use for sending mail (in your case the base machine)
must have an appropiate arpa-record for reverse DNS-lookups
and the mail-address you give in the From:-field must also be
valid (i.e. server must be accessible thru DNS plus MX-records).

Michael