On Wed, Nov 19, 2014, Arrigo Marchiori wrote: > MAIL FROM:<two@localhost,users@localhost> > 501 5.1.7 Bad sender address syntax
> > MAIL FROM:<reverse-path> [SP <mail-parameters> ] <CRLF> > > The use of source routes is deprecated; while servers MUST be > >From the above, I understand that the e-mail is poorly formatted, but > also that Postfix should have accepted it nevertheless! Wrong. That's not even a "source route" address, it's just plain invalid (for MAIL). Check the grammar in the RFC. PS: a "source route" address is something like @ONE,@TWO:JOE@THREE as explained in Appendix C (from which you quoted a part).