Martin Bodenstedt wrote:

> Once in a while (but much too often!) I find the following entry in our
> firewall log (and local users complain about missing emails):
>
> smtpd: Invalid SMTP protocol: Overly long line received from
> mailgate.landtag-bw.de ([aaa.bbb.ccc.ddd])
>
> The "mailgate" referred to in the message is the machine acting as our
> mail frontend (Win2003, IIS6.0).
>
> It seems to me that the mails beeing forwarded from our mailgate to our
> firewall sometimes violate the smtp specs (line length (wrapping)?)...
>
> Any ideas anyone what may be causing this?
>