Paul Schmehl via Postfix-users:
> > On Jun 16, 2024, at 5:02?PM, Wietse Venema via Postfix-users
> > <postfix-users@postfix.org> wrote:
> >
> > Paul Schmehl via Postfix-users:
> >> I?m trying to sort out a problem with Roundcube failing to send email with
> >> an error message that says SMTP Error(): authentication failed. In the
> >> roundcube error log I find this:
> >>
> >> [16-Jun-2024 13:58:24 -0500]: <5s9tomcd> PHP Error: SMTP server does not
> >> support authentication (POST
> >> /webmail/?_task=mail&_unlock=loading1718564304121&_framed=1&_action=send)
> >> [16-Jun-2024 13:58:24 -0500]: <5s9tomcd> SMTP Error: Authentication
> >> failure: mail.stovebolt.com <http://mail.stovebolt.com/>
> >
> > Look in Your logs.
> >
> > - Did the client connect to port 25 or 578?
> >
>
> 578
>
> > - Did the client send starttls? That is logged in the "disconnect
> > from" line.
> >
>
> I don't see anything in the postfix logs (/var/log/maillog) from roundcube. I
> guess I need to enable debug.
No debug logging needed. This information is ALWAYS logged:
Example of client that sends starttls:
disconnect from host[addr] ehlo=2 starttls=1 mail=1 rcpt=1 data=1 quit=1
commands=7
Example of client that does not send starttls:
disconnect from host[addr] ehlo=1 mail=1 rcpt=1 data=1 quit=1 commands=5
In your case there may be only ehlo but no mail, rcpt, and so on.
Wietse
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