Mick:
> Hi,
>
> I'm trialling DMARC to two of my domains. On checking the results when
> posting from the secondary domain I receive 'SPF Domain Alignment Result
> = FAIL'. I think this is because postfix always says HELO with the
> primary domain name, which is obviously different to the secondary. Is
> there a way to rewrite the message envelope to say HELO using the same
> domain used in the from field?
I suspect that the problem is that the SMTP client IP address no
not match the SPF rule.
You may want to set up sender_dependent_default_transport to use
different Postfix SMTP clients depending on the envelope sender
email address, with "-o smtp_bind_address" settings in master.cf
for the proper client IP address.
Wietse
