nanog mailing list archives
Re: Why do so few mail providers support Port 587?
From: Florian Weimer <fw () deneb enyo de>
Date: Thu, 24 Feb 2005 22:15:58 +0100
* Nils Ketelsen:
What can be done to encourage universities and other mail providers with large roaming user populations to support RFC2476/Port 587?Give a good reason. That is still the missing part.
From the MTA perspective, 25/TCP is the "you are responsible for the
message" port, 587/TCP is the "I will be responsible for the message" port. In other words, the implied abuse management contracts differ significantly. However, this is mostly theory. I'm not sure if mail providers will try to pass responsibility for spam injected on 587/TCP to the ISP from whose address space the message was submitted. (They already do so for some parts of the abuse management process, e.g. law enforcement requests.)
Current thread:
- Re: Why do so few mail providers support Port 587?, (continued)
- Re: Why do so few mail providers support Port 587? Owen DeLong (Feb 16)
- Re: Why do so few mail providers support Port 587? Joe Maimon (Feb 16)
- Re: Why do so few mail providers support Port 587? Chip Mefford (Feb 16)
- Re: Why do so few mail providers support Port 587? Daniel Senie (Feb 15)
- Re: Why do so few mail providers support Port 587? Steve Sobol (Feb 15)
- Re: Why do so few mail providers support Port 587? Sean Donelan (Feb 16)
- Re: Why do so few mail providers support Port 587? Florian Weimer (Feb 19)
- Re: Why do so few mail providers support Port 587? J.D. Falk (Feb 19)
- Re: Why do so few mail providers support Port 587? Sean Donelan (Feb 19)
- Re: Why do so few mail providers support Port 587? Florian Weimer (Feb 19)
- Re: Why do so few mail providers support Port 587? Nils Ketelsen (Feb 24)
- Re: Why do so few mail providers support Port 587? Florian Weimer (Feb 24)
- Re: Why do so few mail providers support Port 587? Valdis . Kletnieks (Feb 24)
- Re: Why do so few mail providers support Port 587? Nils Ketelsen (Feb 24)
- Re: Why do so few mail providers support Port 587? Valdis . Kletnieks (Feb 24)
- RE: Why do so few mail providers support Port 587? andrew2 (Feb 24)
- Re: Why do so few mail providers support Port 587? Joe Maimon (Feb 24)
- RE: Why do so few mail providers support Port 587? Jim Popovitch (Feb 24)
- RE: Why do so few mail providers support Port 587? Smoot Carl-Mitchell (Feb 24)
- Re: Why do so few mail providers support Port 587? Nils Ketelsen (Feb 25)
- RE: Why do so few mail providers support Port 587? andrew2 (Feb 25)
- Re: Why do so few mail providers support Port 587? Joe Maimon (Feb 25)