[BlueOnyx:04407] Re: sending on port 2525...

[Stephanie Sullivan]

> -----Original Message-----
> From: blueonyx-bounces at blueonyx.it [mailto:blueonyx-
> bounces at blueonyx.it] On Behalf Of Chris Gebhardt - VIRTBIZ Internet
> Sent: Wednesday, May 05, 2010 4:43 PM
> To: BlueOnyx General Mailing List
> Subject: [BlueOnyx:04404] Re: sending on port 2525...
> 
> Scott wrote:
> > Local ISPs block both 25 and 587.
> What a bizarre ISP that would block 587!   That would be sort of like
> blocking 443 or something equally strange.   Blocking port 587 would
> be a violation of RFC4409:
> http://tools.ietf.org/html/rfc4409
> 
> For an ISP to block 587 is so utterly strange that I've never seen
> it.

I must concur with Chris on this point. Verizon DSL and FIOS customers in
New England recently got notices that they would be closing port 25 down for
outgoing email except as sent to their provided servers. They explicitly
recommended using port 587 for external email servers when sending mail
through them.

Also, here in central MA Charter communications does not block port 25 ...
yet.

	Thanks,
		-Stephanie