[105302] in North American Network Operators' Group

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RE: SMTP no-such-user issues

daemon@ATHENA.MIT.EDU (Frank Bulk - iNAME)
Tue Jun 17 08:46:17 2008

From: "Frank Bulk - iNAME" <frnkblk@iname.com>
To: "'Steve Bertrand'" <steve@ibctech.ca>
In-Reply-To: <4857B177.10201@ibctech.ca>
Date: Tue, 17 Jun 2008 07:45:55 -0500
Cc: nanog@nanog.org
Reply-To: frnkblk@iname.com
Errors-To: nanog-bounces@nanog.org

Once you've performed a full capture on port 25, Wireshark does a nice job
of providing an option to extract the relevant conversation by
right-clicking on just one packet in that conversation and choosing
something called "Follow the TCP stream", I believe. 

Frank

-----Original Message-----
From: Steve Bertrand [mailto:steve@ibctech.ca] 
Sent: Tuesday, June 17, 2008 7:44 AM
To: frnkblk@iname.com
Cc: nanog@nanog.org
Subject: Re: SMTP no-such-user issues

Frank Bulk - iNAME wrote:
> Please share a packet capture of a working and not working SMTP exchange.

In order to provide the highest amount of clarity, could you recommend a
specific set of tcpdump command line args that I should use?

Steve



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