Add variable(s) to strip off headers from forwarded emails (Amazon SES compatibility) #267
Description
Description
In this issue I opened in the anonaddy/anonaddy repository, I reported an error occurring when forwarding emails from certain senders while using Amazon SES as an email relay.
I also described that the cause is in the sender setting certain email headers such as Sender with the original sender's address and Amazon SES checking that that header (and a few others) contains a verified identity. This makes Amazon SES essentially not 100% compatible with how Addy.io works.
I finally explained a solution/workaround I found consisting of modifying the postfix configuration so that it strips the "offending" headers from forwarded emails.
It would be very helpful if anonaddy/docker had some environment variable(s) that can be set with the email header(s) (e.g. Sender, Source, etc.) to strip off from forwarded emails, so that postfix is automatically configured accordingly.