Ethereal-users: Re: [Ethereal-users] Help

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From: Guy Harris <gharris@xxxxxxxxx>
Date: Tue, 27 May 2003 11:23:45 -0700
On Tue, May 27, 2003 at 10:06:01AM +0200, avron wrote:
> I need to find a way to filter both incoming and outgoing mail.

I'm now using SpamAssassin to filter incoming mail to my home e-mail
account, but that's presumably not the type of filtering to which you're
referring.  :-)

> If anyone has the time to help me setup the filters properly it would be
> greatly appreciated. This is the first time I'm using Ethereal and I'm
> battling a bit. I know I can filter port 25 and all SMTP traffic but to
> set it I have not been successful as of yet.

"Not successful" meaning what?

Ethereal returns a syntax error when you try to capture packets using
the filter?  If so, try using the filter

	tcp port 25

or possibly

	tcp port smtp

to capture all traffic to or from port 25.

Or Ethereal doesn't return a syntax error, as you *did* use that filter,
but it's not seeing any SMTP traffic, other than perhaps SMTP traffic to
or from the machine running Ethereal?  If so, note:

	http://www.ethereal.com/faq.html#q5.1