Hello everyone,
Hope you are keeping well.
I have an issue with email forwarding that I am trying to figure out.
Exim-4.97 here, with Exim4U if that matters.
I have a setting where emails sent to ALIAS@domain are forwarded to
USER1ACCOUNT(a)gmail.com and USER2ACCOUNT(a)gmail.com
For domains with strict SPF, this definitely fails as shown below.
<CUT>
This message was created automatically by mail delivery software.
A message that you sent could not be delivered to one or more of
its recipients. This is a permanent error. The following
address(es) failed:
USER1ACCOUNT(a)gmail.com
(ultimately generated from COMMON_ADDR@domain)
host gmail-smtp-in.l.google.com [142.250.27.26]
SMTP error from remote mail server after end of data:
550-5.7.26 The MAIL FROM domain [alexanna.co.ke] has an SPF record with
a hard
550-5.7.26 fail policy (-all) but it fails to pass SPF checks with the
ip:
550-5.7.26 [41.212.32.14]. To best protect our users from spam and
phishing,
550-5.7.26 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. mm11-20020a170906cc4b00b009c74e4ffa08si671339ejb.279 - gsmtp
USER2(a)gmail.com
(ultimately generated from COMMON_ADDR@domain)
host gmail-smtp-in.l.google.com [142.250.27.26]
SMTP error from remote mail server after end of data:
550-5.7.26 The MAIL FROM domain [alexanna.co.ke] has an SPF record with
a hard
550-5.7.26 fail policy (-all) but it fails to pass SPF checks with the
ip:
550-5.7.26 [41.212.32.14]. To best protect our users from spam and
phishing,
550-5.7.26 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. mm11-20020a170906cc4b00b009c74e4ffa08si671339ejb.279 - gsmtp
</CUT>
It looks like during the forwarding, I should rewrite the From: address to
COMMON_ADDR@domain instead of letting the original sender address stay in
the Envelope sender?
This case is similar to
https://lists.exim.org/lurker/thread/20231106.101434.4a28c7c1.en.html except
that I do not use the redirect router. The forwarded email is handled by
the remote_smtp transport
Has anyone else faced this issue with Gmail and other providers? How do you
mitigate this?
--
Best regards,
Odhiambo WASHINGTON,
Nairobi,KE
+254 7 3200 0004/+254 7 2274 3223
"Oh, the cruft.", egrep -v '^$|^.*#' ¯\_(ツ)_/¯ :-)
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