Some gmail questions

[blu-Z8efaSeK1ezqlBn2x/YWAg at public.gmane.org (Edward Ned Harvey)]

> From: discuss-bounces-mNDKBlG2WHs at public.gmane.org [mailto:discuss-bounces-mNDKBlG2WHs at public.gmane.org] On Behalf
> Of Tom Metro
> 
> To clarify, having a PTR record for your mail server's IP is generally
> required, but having the PTR record match the HELO (EHLO) domain should
> not be required, and rejecting messages that violate this is considered
> bad practice. Though that doesn't stop a few well known sites from doing
> so (craigslist.org, for example).

Agreed, but all spam filters are just assigning probabilities based on
things they see.  I don't know of anyone who rejects mail based on
unmatching forward & reverse & EHLO, but it is certainly possible for some
spam filter to allow that to be a factor.