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.
Wietse
