Hi, what kind of MTA does your amavis forward to? That MTA does not announce 8BITMIME support. With a postfix this could have been achieved via smtpd_discard_ehlo_keyword_address_maps.
> dsn: . 550 MtaRejected <[email protected]> -> <[email protected]>: > on_succ=0, on_dly=1, on_fail=1, never=0, warn_sender=, DSN_passed_on=0, > destiny=-3, mta_resp: "550 5.6.3 id=02074-04 - Rejected by next-hop MTA > on relaying, Conversion to 7BIT required but not supported"
