Wietse Venema:
> Michael:
> > On 1/14/19 11:19 AM, Wietse Venema wrote:
> >
> > > The 'invalid parameter supplied' is an error message the local SASL
> > > library. This error happens while Postfix prepares to send the AUTH
> > > command.
> > >
> > > Why does the Cyrus SASL library return 'invalid parameter supplied'?
> > > I can only speculate that it does not like something about the SASL
> > > mechanism list (which Postfix got from the Gmail server), or something
> > > about the username or password (which it got from local file).
> > >
> > > It would be worthwhile to see the AUTH parameter in the server's
> > > EHLO response before and after Postfix sends STARTTLS.
> > >
> > > Wietse
> >
> >
> > Thanks Wietse,
> >
> >
> > Using Angelo's testing methodology, I can see this:
> >
> > 250-smtp.gmail.com at your service, [68.226.113.229]
> > 250-SIZE 35882577
> > 250-8BITMIME
> > 250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH
>
> Maybe it does not like the AUTH line. What happens when you
> only keep the "250-AUTH LOGIN PLAIN" part?
>
> /etc/postfix/main.cf:
> smtp_reply_filter = pcre:/etc/postfix/reply_filter
>
> /etc/postfix/reply_filter:
> /^(250.AUTH LOGIN PLAIN)/ $1
>
> Caution: this is a sharp tool that replaces server responses.
Ignore this, Viktor's SASL mechanism filter is better.
Wietse
