-=PCTechTalk=- Re: Email Clients . . . 2 at once?
- From: "Roger" <rcleavitt@xxxxxxxxxxxxx>
- To: <pctechtalk@xxxxxxxxxxxxx>
- Date: Sun, 21 Sep 2008 15:58:07 -0700
"Some Internet service providers intercept port 25, so that it is not
possible for their users to send mail via a relaying SMTP server elsewhere
using port 25; they are restricted to using the ISP's SMTP server only. Some
independent SMTP servers support an additional port other than 25 to allow
users with authenticated access to connect to them even if port 25 is
blocked."
ATT uses Port 465 on SSL. Try using port 25 and the mail may go but you
immediately get a letter advising you not to use port 25, or else.
ATT uses SSL for outgoing and incoming on 995 and 465. That change took
place a year or so ago!
Both ports require authentication.
-----------------------
----- Original Message -----
From: "Gman" <gman.pctt@xxxxxxxxx>
To: <pctechtalk@xxxxxxxxxxxxx>
Sent: Sunday, September 21, 2008 3:38 PM
Subject: -=PCTechTalk=- Re: Email Clients . . . 2 at once?
> Gmail and some others use SSL over port 465 for their SMTP server (which
> is
> in violation of the SMTP specs) but most use port 25 for theirs,
> regardless
> of whether SSL is used or not. SSL is just a server authentication that's
> added to the transmission and is not 'port dependent'. What IS port
> dependent is that you must be sending to the same port that your email
> provider's SMTP server is using.
>
> http://en.wikipedia.org/wiki/Simple_Mail_Transfer_Protocol#Outgoing_mail_SMTP_server
> OR
> http://tinyurl.com/otkzt
>
> Peace,
> Gman
>
> "The only dumb questions are the ones we fail to ask"
>
> ----- Original Message -----
> From: "Roger" <rcleavitt@xxxxxxxxxxxxx>
> To: <pctechtalk@xxxxxxxxxxxxx>
> Sent: Sunday, September 21, 2008 2:06 PM
> Subject: -=PCTechTalk=- Re: Email Clients . . . 2 at once?
>
>
>>> SSL (Secure Sockets Layer), POP switches over to port 995, but SMTP will
>>> still use port 25. You might occasionally come across a server that
>>> dictates the use of a different port, but those are pretty rare.
>>
>> Port 25 does not use SSL. I'm guessing that if you use SSL and POP on 995
>> you will need to switch to Port 465 for SMTP.
>> Both ports require authentication!
>>
>> ---------------
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