Hello,
After a discussion on mailop back in 2015, I made the following note in
some to-gmail-forwarder configuration:
When forwarding to non-local addresses, don't automatically rewrite
the envelope sender. This used to be best practice but some domains
explicitly recommend against it:
https://support.google.com/mail/answer/175365?hl=en
I've always wondered, how SPF will break this one day but it *did* work
for almost 7 years so I moved on.
Today I'm back to rewriting the envelope sender since Google now seems
to handle SPF differently:
550-5.7.26 This message fails to pass SPF checks for an SPF record with a
hard
550-5.7.26 fail policy (-all). To best protect our users from spam and
550-5.7.26 phishing, the message has been blocked. Please visit
550-5.7.26 https://support.google.com/mail/answer/81126#authentication for
more
550 5.7.26 information.
fo10-20020ad45f0a000000b004705f52a106si4521443qvb.420 - gsmtp
If this is here to stay, maybe the article above should be updated..
Thanks
Petar
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