Re: RESOLVED: RE: wrong From: and Return Path: address

2017-09-27 Thread Viktor Dukhovni
On Wed, Sep 27, 2017 at 07:00:39PM -0700, Michael Fox wrote: > > This is an obsolete option in Sendmail that violates decades old SMTP > > standards, CNAME canonicalization of recipient domains went away in > > RFC 2821 and there are many email domains that are aliases where the > > mailbox

RE: RESOLVED: RE: wrong From: and Return Path: address

2017-09-27 Thread Michael Fox
> > On Sep 26, 2017, at 11:23 PM, Michael Fox wrote: > > > > BTW, the mail provider found that the default sendmail config and their > own > > customized config both rewrote the From: header when the From: address > was > > for a domain that had a CNAME record. They said this is

Re: RESOLVED: RE: wrong From: and Return Path: address

2017-09-26 Thread Viktor Dukhovni
> On Sep 26, 2017, at 11:23 PM, Michael Fox wrote: > > BTW, the mail provider found that the default sendmail config and their own > customized config both rewrote the From: header when the From: address was > for a domain that had a CNAME record. They said this is a config

RESOLVED: RE: wrong From: and Return Path: address

2017-09-26 Thread Michael Fox
> > Michael Fox skrev den 2017-09-21 19:52: > > > I have a problem that seems to have started when I upgraded from > Ubuntu > > > 14.04/Postfix 2.11.0 to Ubuntu 16.04/Postfix 3.1.0. It involves the > > > From: > > > and Return Path: addresses seen by recipients of mail sent from a > > > virtual >