iBLJa1Gu008596: .. did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA

[Steve Hickel]

I believe it is a What's up gold server checking the smtp service is
running. That would make sense.

Obviously not a MailScanner issue. Thanks all!

Steve

On Tue, 2004-12-21 at 18:22, Oliver Hookins wrote:
> Peter Bonivart wrote:
> > Peter Bonivart wrote:
> >
> >> Ping does not connect to 53/tcp, it's a completely different mechanism.
> >
> >
> > Sorry for replying to my own post but I for some reason wrote 53 (DNS)
> > when I of course meant 25 (SMTP). Sorry for the confusion.
> >
> > --
> > /Peter Bonivart
>
> Ping doesn't connect to port 25 either. It's a different protocol
> altogether. Ping uses ICMP whereas SMTP uses TCP. DNS most often uses
> UDP. Ping can't be altogether relied on to determine connectivity with a
> host as it might be blocking ICMP traffic.
>
> Regards,
> Oliver
>
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