Still getting spam of the drug nature
drew at THEMARSHALLS.CO.UK
Thu Oct 6 19:45:03 IST 2005
On 6 Oct 2005, at 18:44, Rodney Green wrote:
> How would you do this in Postfix?
smtpd_helo_restrictions = reject_non_fqdn_hostname
And you can also add reject_unknown_hostname to reject MTAs that HELO
with unknown names.
These can be quite draconian so you might want to first test them by
adding warn_if_reject in front of those so Postfix does the test and
logs the failure instead of actually rejecting based on the failure.
That way over a few days you can make sure you best customer's dodgy
Exchange server isn't being rejected in error.
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