This issue can happen when using amavis. In case you have a double email signature you can edit your postfix config. File: /etc/postfix/master.cf smtp inet n - n - - smtpd -o content_filter=smtp-amavis:127.0.0.1:10024 -o receive_override_options=no_address_mappings After no_address_mappings add no_milters , example: smtp inet n - n - - smtpd -o content_filter=smtp-amavis:127.0.0.1:10024 -o receive_override_options=no_address_mappings,no_milters After changes […]
