there was a thread about supanet last week, and how they check the ehlo against PTR. in their case, it will not be possible to send them a email from a virtual host. correct?
no. Best practice is that PTR domain name + ehlo domain name + SMTP greeting domain name should all be the same domain name.
and the domain name has nothing to do with MX records or envelope sender/recipient domains or Imail virtual domains or anything else.
Len
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