Educause Security Discussion mailing list archives
Re: Does anyone know how Verizon's outbound, external mail (port 587) is going to work?
From: Derek Diget <derek.diget+educause-security () WMICH EDU>
Date: Thu, 24 Sep 2009 09:42:53 -0400
On Sep 24, 2009 at 08:17 -0400, Peter Charbonneau wrote: => I am wondering exactly how this is going to work. Do we punch holes in our =>firewalls to allow tcp port 587 inbound to our mail networks, or is Verizon =>going to port translate destination port 587 IN their network to port 25 as it =>leaves? I have tried to talk to Verizon tech support, but I either get =>"What?!?" or "It's all explained in the document". When I ask to talk to a =>supervisor, they are unavailable. => => Does anyone here know? Looks like they are looking at RFC 5068 - Email Submission Operations: Access and Accountability Requirements, and <http://www.ietf.org/rfc/rfc5068.txt>, and RFC 4409 - Message Submission for Mail, <http://www.ietf.org/rfc/rfc4409.txt>. I hope their next step will be to require this change (message submission via port 587) to their @verizon.net address customers, too. i.e. Eventually, all message submission should be via port 587...be it to a verizon MSA or a non-verizon MSA. We have been blocking in-bound port 25 for many, many years, out-bound port 25 for about 7 years, message submission via 587 (and 25 and 465) for about the same length, as well as block direct to our MX e-mail from our intra-net address space. There is an Email Administration in Higher Education mailing list that you might want to post you question to. See <https://listserv.nd.edu/cgi-bin/wa?A0=HIED-EMAILADMIN>. -- *********************************************************************** Derek Diget Office of Information Technology Western Michigan University - Kalamazoo Michigan USA - www.wmich.edu/ ***********************************************************************
Current thread:
- Does anyone know how Verizon's outbound, external mail (port 587) is going to work? Peter Charbonneau (Sep 24)
- <Possible follow-ups>
- Re: Does anyone know how Verizon's outbound, external mail (port 587) is going to work? Raw, Randy (Sep 24)
- Re: Does anyone know how Verizon's outbound, external mail (port 587) is going to work? Ken Connelly (Sep 24)
- Re: Does anyone know how Verizon's outbound, external mail (port 587) is going to work? Brad Judy (Sep 24)
- Re: Does anyone know how Verizon's outbound, external mail (port 587) is going to work? Don M. Blumenthal (Sep 24)
- Re: Does anyone know how Verizon's outbound, external mail (port 587) is going to work? Gary Dobbins (Sep 24)
- Re: Does anyone know how Verizon's outbound, external mail (port 587) is going to work? Doty, Timothy T. (Sep 24)
- Re: Does anyone know how Verizon's outbound, external mail (port 587) is going to work? Derek Diget (Sep 24)
- Re: Does anyone know how Verizon's outbound, external mail (port 587) is going to work? Dennis Meharchand (Sep 24)
- Re: Does anyone know how Verizon's outbound, external mail (port 587) is going to work? Derek Diget (Sep 24)
- Re: Does anyone know how Verizon's outbound, external mail (port 587) is going to work? Valdis Kletnieks (Sep 25)
- Re: Does anyone know how Verizon's outbound, external mail (port 587) is going to work? Jesse Thompson (Sep 25)