Educause Security Discussion mailing list archives
Re: Blocking port 25 outbound
From: Matthew Keller <kellermg () POTSDAM EDU>
Date: Mon, 22 Aug 2005 17:56:11 -0400
We implemented an outgoing (and incoming) port 25 block from (and to) anything other than white-listed e-mail servers a couple years ago. We had one faculty who was running her own mail server that got a little bent, but we whitelisted her and it went away. Not a peep from the rest of the campus community. On Mon, 2005-08-22 at 15:29 -0400, Lazor, Joseph wrote:
Hello out there, We are considering blocking all port 25 traffic outbound. We have noted various ISP’s and others moving to block port 25 outbound to reduce “spamming”. We wish to be good “netizens” Have any of you done this already and what has been the push back of issues related to implementation on your campus? Regards, Joseph A. Lazor Florida Sate University
-- Matthew Keller Enterprise Systems Analyst Computing & Technology Services State University of New York @ Potsdam Potsdam, NY USA http://mattwork.potsdam.edu/
Current thread:
- Re: Blocking port 25 outbound, (continued)
- Re: Blocking port 25 outbound Michael Grinnell (Aug 22)
- Re: Blocking port 25 outbound Information Security (Aug 22)
- Re: Blocking port 25 outbound Michael Halm (Aug 22)
- Re: Blocking port 25 outbound Joe St Sauver (Aug 22)
- Re: Blocking port 25 outbound Information Security (Aug 22)
- Re: Blocking port 25 outbound Information Security (Aug 22)
- Re: Blocking port 25 outbound Trevor J Corbett (Aug 22)
- Re: Blocking port 25 outbound Christopher E. Cramer (Aug 22)
- Re: Blocking port 25 outbound Jason Richardson (Aug 22)
- Re: Blocking port 25 outbound Scott Genung (Aug 22)
- Re: Blocking port 25 outbound Matthew Keller (Aug 22)
- Re: Blocking port 25 outbound Information Security (Aug 22)
- Re: Blocking port 25 outbound Michael Sinatra (Aug 22)
- Re: Blocking port 25 outbound John Kristoff (Aug 22)
- Re: Blocking port 25 outbound Chris Steele (Aug 22)
- Re: Blocking port 25 outbound Orlando Richards (Aug 23)
- Re: Blocking port 25 outbound Paul Russell (Aug 23)
- Re: Blocking port 25 outbound Kenneth G. Arnold (Aug 23)