Patrick Ben Koetter:
> Something ? quite likely a Cisco ASA/PIX ? manipulates the SMTP server banner
> and the STARTTLS capability announcement. This is what it should look like:
>
> 220 mail.sys4.de ESMTP Submission
That's what I thought, too, but RFC 1651 (SMTP Service Extensions) disagrees.
This might work:
- Disable PIX workarounds. Specify an empty smtp_pix_workarounds value.
smtp_pix_workarounds =
Or at least, remove "disable_esmtp" from the smtp_pix_workarounds
setting.
- Send 'blind' EHLO. This is already implemented with the default
setting:
smtp_always_send_ehlo = yes
- Fall back to sending HELO. That code already exists.
Wietse
