nanog mailing list archives

Re: SMTP spoofing ?


From: sully () mail usinternet com
Date: Thu, 19 Feb 1998 11:06:05 +0000

Yes, NAT on cisco's.

Tim Sullivan
Network Hobbyist

At 11:52 AM 2/19/98 -0500, you wrote:
Are there any routers currently available that can do port 25 spoofing for
dialup users?  That is, when the user attempts to connect to port 25
anywhere, he in fact connects to port 25 on your own SMTP server instead. 

In case it's not obvious, it's for spam management.

Regards,
John Levine, johnl () iecc com, Primary Perpetrator of "The Internet for
Dummies",
Information Superhighwayman wanna-be, http://iecc.com/johnl, Sewer
Commissioner
Finger for PGP key, f'print = 3A 5B D0 3F D9 A0 6A A4  2D AC 1E 9E A6 36
A3 47 


------------------------------------------------------------------
                       Tim Sullivan
        Senior Technical Administrator/Support/Network Consultant
                  http://www.usinternet.com 
        US Internet Corp - Full Service Internet Provider
          "Get your Net's Worth" (tm)   (612) 222-4638
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