North American Network Operators Group
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RE: Port 25 - Blacklash

  • From: Hannigan, Martin
  • Date: Tue Apr 26 12:16:19 2005 
> -----Original Message-----
> From: [email protected] [mailto:[email protected]]On Behalf Of
> Paul Ryan
> Sent: Tuesday, April 26, 2005 11:11 AM
> To: Nanog Mailing list
> Subject: FW: Port 25 - Blacklash
> Importance: High

> 
> For any educational institutions on this list - what has been 
> the impact on
> your mail services once your ISP started blocking port 25 - 
> what if any was
> the backlash - and how difficult was it to provide 
> alternatives ...587,465
> etc ...

Why would an ISP block port 25 for .edu customers?

The universities I'm familiar with have PI space vs
PA. Comparatively, that should be the boundary to determine 
whether to block 25 or not, IMO. 


-M<