Re: Does anyone know how Verizon's outbound, external mail (port 587) is going to work?

[Jesse Thompson <jesse.thompson () DOIT WISC EDU>]

Derek Diget wrote:
> On Sep 24, 2009 at 11:52 -0400, Dennis Meharchand wrote:
> =>Because we implemented SPF (Sender Policy Framework) - to mitigate our email
> =>addresses from being spoofed with SPAM and Malware (we are a security
> =>company) - our emails get rejected when sent to email servers looking for
> =>SPF implementation.
> =>
> =>If you have implemented SPF records you may run into problems using 587 for
> =>sends.
>
> I am no SPF expert.....but if your e-mail submission is done correctly
> you shouldn't have any problems with a SPF record ending in -all.

Right.  You shouldn't be using SPF to prevent your own authenticated
users from submitting messages to your server.

To answer the original question.  We support all of 25/TLS, 465/SSL and
587/TLS for authenticated outbound email submissions.  The vast majority
of our client documentation instructs users to configure port 587 unless
the client or ISP doesn't support it.

Jesse

--
  Jesse Thompson
  Division of Information Technology, University of Wisconsin-Madison
  Email/IM: jesse.thompson () doit wisc edu

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