Dear AT&T… I nearly blew off this email as a malware attempt as the subject line read “Reminder: Important Security update” which sounds like the 40,000 other emails I get that say “your system is infected, run this tool that we’re hiding bad things inside to clean your system up”.

Well you might want to search for this email and read this VERY CAREFULLY as it may impact your SBS domains if you are in the AT&T/Yahoo area.

——– Original Message ——–

Subject: Reminder: Important security update
Date: Thu, 31 May 2007 06:00:14 -0700
From: AT&T Yahoo! Customer Care <>
To: AT&T Yahoo! Internet Members <>


Time is running out — update your email settings to help us serve you better

Dear AT&T Yahoo! Member,

We recently contacted you about some important security improvements we’re making to your AT&T Yahoo! service. These changes will affect members who send or receive email from a desktop or mobile client program, such as Microsoft Outlook, Microsoft Outlook Express, Eudora, Apple Mail, or Thunderbird.

To help us ensure the security of your email, you will need to change the settings on your desktop or mobile email client program. Please choose one of the three options:



Make the Changes Automatically: To automatically make the required changes to Outlook Express, use the AT&T Self Support Tool.

  • If you already have the AT&T Self Support Tool installed on your computer, simply select Cannot send/receive email from the Self Support Tool Main Interface to run an email settings check. When prompted to change your email settings, select Yes.

  • If you do not have the AT&T Self Support Tool installed, download it and then follow the instructions above.
Make the Changes Manually: To manually make the required setting changes in Outlook and Outlook Express, please view the detailed instructions here.

Alternatively, you may take the following steps to change the settings on your desktop or mobile email client program:

  1. Open your email client program.

  2. Locate the email account settings for your particular client.

  3. Change the POP server to

  4. Change the SMTP server to

  5. Check the option labeled Use an encrypted connection (SSL) and change the SMTP port to 465.

  6. Check the option labeled Use an encrypted connection (SSL) and change the POP3 port to 995.

  7. Confirm the above settings then click OK.
The web-based version of AT&T Yahoo! Mail is not affected by these changes and will continue to be available at

Thanks for your cooperation.

AT&T Yahoo! Customer Care



Bottom line if you use pop to pull in your email on your SBS network from an AT&T/Yahoo account that got this notification, you will no longer be able to use the Microsoft supplied POPconnector as it does NOT support secure pop.  You will need to purchase or some other third party pop connection program that supports this protocol.  Microsoft does not.


Or, even better, move to full SMTP and use in front of your systems.

2 Thoughts on “Using POP connector with AT&T Yahoo?

  1. For those using the AT&T yahoo as a smart host, I know I need to change the SmallBusiness SMTP connector to now forward all mail to the (it was But, do I need to change anything with the SSL port number? Where do I change that, or do I need to switch to something like exchangedefender in my situation as well?

  2. Rich Lusk on June 5, 2007 at 8:18 pm said:

    Good question. I was just about to ask that.

    Susan, is there anything that needs to be changed on an SBS box that uses AT&T Yahoo for a Smart Host?

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