Art Alexion on 2 Jun 2010 05:33:08 -0700

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Re: [PLUG] Collegeville, PA FiOS now blocking outgoing port 25

On Tue, Jun 1, 2010 at 2:52 PM, JP Vossen <> wrote:
> I *think*...  I did not fully test it, but as of last night/early this
> morning, I was unable to connect to my hosted server on port 25.  The
> server was up and fine, sIMAP & SSH worked fine, and port 25 to that
> server worked from elsewhere (Comcast in NJ, among others).

Yep, same thing happened to me yesterday morning with FiOS in
Glenside.  A couple of mails went out, and suddenly, the rest were
stuck in the outbox with "authentication" errors.  I recalled getting
something from google about this so I assumed it was Gmail which was
refusing SMTP on 25, as opposed to Verizon blocking the port.  Based
on the error messages I got, I still think it was Gmail, but it is
quite a coincidence if you started getting blocked around the same
time and weren't using google apps.

> 2) Change all the client configs to use port 587 in the GUI
> (workstations)

Yep.  That fixed it for me.  By the way, kmail does a nice job of
detecting the port the server wants.

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