How do I block a domain from the recieved portion of headers
steve.swaney at fsl.com
Wed Mar 22 19:38:26 GMT 2006
> -----Original Message-----
> From: mailscanner-bounces at lists.mailscanner.info [mailto:mailscanner-
> bounces at lists.mailscanner.info] On Behalf Of Brandon Hoppe
> Sent: Wednesday, March 22, 2006 12:10 PM
> To: 'MailScanner discussion'
> Subject: RE: How do I block a domain from the recieved portion of headers
> I'm using sendmail on Solaris 9.
> I like the way you mention better. I'll have to see if sendmail has such a
> What MTA are you using. I'm using PostFix and have a check_helo_access
> rule that rejects email falsely claiming to be from within my domain.
> The ol reply to myself problem. Forgot that I also have a
> check_sender_access with smtpd_helo_restrictions.
Look at adding bogus HELO checking to sendmail. Download:
Install the contents as /usr/share/sendmail-cf/hack/block_bad_helo.m4
Then add the line below line to the top of your sendmail.mc file right after
the line "include(`/usr/share/sendmail-cf/m4/cf.m4')dnl":
Here is the line to add:
The rebuild your sendmail.cf file:
m4 sendmail.mc > sendmail.cf
Then restart MailScanner.
Fort Systems Ltd.
stephen.swaney at fsl.com
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