Mark Smith wrote:
Are there any *valid* reasons for a mailserver's HELO greeting not matching the hostname obtained from rDNS?
This topic comes up every now and then...
You will get (and already got) opinions in a wide range. It depends on what you consider a "*valid*" reason. Fact is, there are many MTA with invalid greetings, for reasons like lazyness, cluelessness, unawareness, ease of setup, software flaws.
I treat EHLO data as totally meaningless, so I don't care about it. After all, I don't want to lose mail because of such a thing.
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