Thanks. I do not see the ORPT option in my log. Is it implied by one of the other entries?
As far as the 'blunt tool', all of the mail processed by this instance will be relayed to Amazon. What are the disadvantages of the smtp_discard_ehlo_keywords that you suggested in that case? On 3 Feb 2015 at 16:41, Wietse Venema wrote: > System Support: > > Changinig from WPNY to w...@maila.myserver.com did fix the problem. > > I have not had to add the domain in the past, but I was not relaying > > to Amazon, and Amazon does verify the source > > address, and I guess that they require a fully qualified name. > > And, based on your other response, I gather that it is not possible > > to have a rewrite rule to do this automatically. > > Amazon was objecting to this SMTP command: > > RCPT TO:<m...@gmail.com> ORPT=rfc822;WPNY > > That is, the problem was not with the recipient address, but with > the ORPT parameter for delivery status notifications. > > The alternative would be to disable Postfix DSN support with: > > /etc/postfix/main.cf: > smtp_discard_ehlo_keywords = dsn, silent_discard > > so that it would send: > > RCPT TO:<m...@gmail.com> > > but that would be a blunt tool. > > Wietse > ...don support (at) microtechniques.com