[ILUG] deliveries to postmaster Sendmail securiety issue
ant at elivefree.net
Thu Feb 7 00:03:02 GMT 2008
> Can anyone tell me why postmaster would get bounc backs for e-mails which
> have not been sent out?
> What kind of tests can I do to see if sendmail is no secure?
You can check if your machine is acting as an open relay at
However I'd say it's far more likely that spammers are sending emails
with the Reply-To: header set to an address at your domain. (It's a
trivial matter to set the headers of an email message.)
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