On Sat 29/Oct/2022 20:56:57 +0200 Douglas Foster wrote:
Host names, both HELO and RevDNS, are not random


+1, possibly except for spam, helo names are meaningful.


On Fri, Oct 28, 2022 at 1:41 AM Murray S. Kucherawy <[email protected]  
<mailto:[email protected]>> wrote:

I've always considered it to be a random string, because the protocol allows it to be such. It doesn't necessarily mean or correlate to
anything as far as I can tell.


The new protocol seems to be going to acknowledge that receivers may (and do) discard messages based on helo names.


Best
Ale
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