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forward external mail to other external domain fails because of SPF checks

forward external mail to other external domain fails because of SPF checks

forward external mail to other external domain fails because of SPF checks

I tried to forward external mail send to an internal mailaddress to the new external mailaddress on another domain. When the sending domain has configured SPF with action fail the receiving mailserver to which the mail is forwarded rejects the mail because it's not send from an authorized server.
I am running postfix 3.4.14. I tried the relocated_maps, but this only sends a reject to the sending server but does not actually cause him to divert the mail to the new address.

How can this be achived? Maybe I could use a sieve script to copy the mail into a new one with a local sending address. This would at least get the mail content to the recipient while not showing the propper sender address.

Do you have any other ideas?


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