K

Visitor

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2 Messages

Sun, Jun 5, 2022 11:12 PM

SMTP settings in Outlook

I have been using a third party POP3/SMTP email server and Outlook to deal with the email. After I switched to Xfinity cable internet, I can still receive emails, but sending emails has stopped working. Is there anything special in the SMTP settings that I need to change in Outlook in order to send emails?

Accepted Solution

Again

Expert

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28.2K Messages

6 months ago

@KJChang 

I have been using a third party POP3/SMTP email server and Outlook to deal with the email. After I switched to Xfinity cable internet, I can still receive emails, but sending emails has stopped working. Is there anything special in the SMTP settings that I need to change in Outlook in order to send emails?

See if this helps.

(edited)

XfinityAnna

Official Employee

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790 Messages

6 months ago

Thank you for reaching out to our Forums community @KJChang. Did you have a chance to look at the Forum thread @Again provided? This article should walk you through the settings step-by-step. If you still need assistance, we will be on standby to help.

Visitor

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2 Messages

@XfinityAnna​ I followed the steps and it still does not work.  Server times out.  It has been since Comcast changed security settings 4/13/22.  that I have been unable to use comcast emails in Outlook 365.  I have gone into my account and allowed 3rd party etc.  To no avail.  The only thing I have not done is delete accounts in Outlook 365 and add them again.

Here is the error log.  

17:56:15 Synchronizer Version 16.0.15225.20070
17:56:15 Synchronizing Mailbox ' [Edited: "Personal Information"]'
17:56:15 Synchronizing local changes in folder 'Inbox'
17:57:50 Error synchronizing folder
17:57:50    [800CCC0E-0-0-430]
17:57:50 Done

Obviously I changed email user name in log for forum.

Any help would be greatly appreciated.

(edited)

XfinityLysa

Official Employee

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527 Messages

I appreciate you sharing those details with us @user_f5287c

 

Let's look at things a bit further and be sure we can get this figured out.

Please send me a Direct Message message so that I can gather some account details. 

Here's the detailed steps to direct message us: 
 • Click "Sign In" if necessary
 • Click the “chat" icon (upper right corner of this page)
 • Click the "New message" (pencil and paper) icon
 • Type "Xfinity Support" in the to line and select "Xfinity Support" from the drop-down list
 • Type your message in the text area near the bottom of the window
 • Press Enter to send your message

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
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Visitor

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1 Message

4 months ago

This has been happening to me as well.  I have tried multiple (Outlook and Thuderbird)  It works fine on the portal but NOT with a 3rd party (And yes I already checked the 3rd party box in the settings)  I am just about ready to leave Comcast for GOOD.  Why for more than ten years does this work and then all of sudden stop.  Makes no sense.  

Again

Expert

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28.2K Messages

@user_10dc44​ 

 

This has been happening to me as well.  I have tried multiple (Outlook and Thunderbird)  It works fine on the portal but NOT with a 3rd party (And yes I already checked the 3rd party box in the settings)  I am just about ready to leave Comcast for GOOD.  Why for more than ten years does this work and then all of sudden stop.  Makes no sense.  

Please post your settings for Outlook and Thunderbird.  You can verify them here:

https://forums.xfinity.com/t5/Internet/ANSWERED-How-to-Set-Up-Your-Comcast-Email-Address-with-an/ta-p/3258506

I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.

Was your question answered? Please mark an Accepted Answer!tick

Visitor

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2 Messages

@user_10dc44​ I feel your pain.  I'm also about to give up on Comcast for all services.  I am sad that this is not resolved.  I manage my fathers email for him as he has low vision and it was convenient to have it all come to one place.  I could stay on top of it for him.  Now I have to go directly to Comcast to view.  A major pain and time consuming.

Official Employee

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490 Messages

@user_10dc44 Are you still having trouble with your email? If so, could you please send our team a direct message with your full name and full address? We're happy to help.

 

  • Click "Sign In" if necessary

 

 

  • Click the "New message" (pencil and paper) icon

 

  • The "To:" line prompts you to "Type the name of a person". Instead, type "Xfinity Support" there

 

  • - As you are typing a drop-down list appears. Select "Xfinity Support" from that list

 

  • - An "Xfinity Support" graphic replaces the "To:" line

 

  • Type your message in the text area near the bottom of the window

 

  • Press Enter to send it
I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick
Again

Expert

 • 

28.2K Messages

@user_f5287c​ 

See if this post solves the problem for you.

I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.

Was your question answered? Please mark an Accepted Answer!tick

Visitor

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4 Messages

While my experience with Comcast Tech Support has genereally been favorable (unfortunately those support wash off their hands by saying "Comcast cannot provide tech support for Outlook related issues. You will have to talk to Microsoft"), I find that the "Official Xfinity Employee"s who answer these questions on the forum are not that helpful when they give links to various post. As far as I can see from the User forum, the Outlook 2019 issue has been around at least for 2 years (though I was exposed to it only in the last 2+ weeks) and no resolution has been forthcoming from Comcast. In my experience, this is unusual from Comcast. I do not know the precise mechanism, but this issue has to be elevated to higher levels at Comcast. This is simply unexplainable behavior on their part.

Thank you & Regards,

RaliR

Visitor

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2 Messages

2 months ago

Checking the other post was indeed not helpful. The problem could not be solved because the issue dealt with in the other post is not the same. I agree that this issue has to be elevated to higher levels at Xfinity/Comcast. I used to use AT&T, who also blocked the direct SMTP connection to the 3rd party server. But AT&T provided clear instructions on how to register the email account that needs SMTP and then use "outbound.att.net" as the alternative SMTP to send emails through Outlook. Similar mechanisms just don't exist in Xfinity.

Although the SMTP service for a POP3/SMTP email account doesn't work in Outlook with Xfinity, the SMTP service for an IMAP/SMTP email account can work. So, I guess the issue may be due to their blocking the use of certain ports such that the SMTP of the POP3/SMTP is selectively affected.

I also gave up trying different things on other posts that are not solutions for sure. What we need are the clear instructions from Xfinity on the settings of POP3/SMTP like the ones AT&T provided for their customers.

New Poster

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8 Messages

17 days ago

RE: Email Comcast SMTP server drops SSL connection to Outlook. None of the proffered advice, from Comcast, or individuals works. While waiting for Comcast support, I set up a Gmail account using the same settings without issue on a Win 11 laptop and 2 Android devices.

Given how long this issue has been festering, I can only conclude Comcast/Xfinity can no longer be counted upon, is not interested in, or capable of, providing a reliable email service, so I am strongly urging everyone to switch email providers. I have had my comcast.net email address for 25 years, so I don't take changing it lightly.

XfinityKyla

Official Employee

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292 Messages

We would be happy to assist you with this privately! I'd like to get your account information and go over a few things. You can reach out by sending a message and addressing it to 'xfinity support'.

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick
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