Re: LUG: Student Email - Thu, 11 Dec 2008 12:10:19 -0500

Subject : Re: LUG: Student Email

From : Matt Nash <mattnash@intrex.[redacted]>

Date : Thu, 11 Dec 2008 12:10:19 -0500

Jack Neely wrote:
> On Mon, Dec 08, 2008 at 10:07:29PM -0500, Matt Nash wrote:
>
>> 993 is the standard port for IMAPS -- incoming, not outgoing. Speaking
>> of which, IMAPS would be a great addition to the NCSU email configuration.
>>
>
> We support IMAPS. In fact I would highly recommend its use. ;-)
>
>
>
Sweet!

>> What I was requesting was simply adding a high port to the SMTP+auth
>> service currently offered on port 25.
>>
>>
>
> What ISPs have you found block outgoing connections to port 25?
>
> A
I am certain that Verizon DSL used to block it, but it mysteriously
works now. I found some lists online of ISPs who supposedly do this,
but I'm not sure how up-to-date they are as they all include Verizon:

http://kb.earthlink.net/case.asp?article=resid9226
http://wiki.dreamhost.com/KB_/_Email_/_POP3/IMAP/SMTP_Servers
http://www.postcastserver.com/help/Port_25_Blocking.aspx

There are excellent reasons for blocking port 25, and all networks I
have ever been in charge of have done so.