[Mimedefang] sendmail and filter_helo interaction

[Richard Laager]

On Thu, 2006-11-09 at 23:06 -0500, Dirk the Daring wrote:
>  		# Check #3
>  		# HELO should not contain "localhost"

How effective is this for you? Do you run into false positives?

> 		# Check #4
>  		# If the HELO is an FQDN, the index and rindex of "." will not be the same
>  		# This catches the spammer using domain.tld (which will slip
>  		#       by Check #2)

I check that the HELO must have a ".", but I haven't gone any further
than that. Does this work well for you? Any false positives?

Richard

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