Zeek69's profile

New Poster

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15 Messages

Monday, August 18th, 2025

Having issues with sending email

I recently moved, I was using Comcast email while on my new Fiber connection at my house. I was having issues sending email then, and it would seem to only work overnight. Now in my new place we have internet through Midco, and I am having the same issues. I can send email fine through the website, but would much rather continue to use Outlook on my phone, laptop, and PC. The error I am getting in Outlook is:
Task '[Edited: "Personal Information"] - Sending' reported error (0x800CCC0F) : 'The connection to the server was interrupted. If this problem continues, contact your server administrator or Internet service provider (ISP).'

Settings I am using are Port 993 SSL/TLS for IMAP incoming, and Port 465 SSL/TLS for SMTP outgoing. If I use Port 587 and STARTTLS, I get a different error, but it still doesn't send. I do have an Xfinity account for Internet, but I have that to get the discount on our phones.

Any help actually resolving this issue would be greatly appreciated.

Ken [Edited: "Personal Information"]

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Official Employee

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1K Messages

9 days ago

@Zeek69 Thanks for adding a post, and detailing what you have done so far. If everything works directly when signing in, it may have to do with the ISP or third party software. Are you able to send an email by signing in to your email account on the phones browser? Have you tested sending emails on the app through the cellular network? 

New Poster

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15 Messages

I can send email fine through the website. It isn't Outlook causing the problem since it worked fine every day until I switched providers. If after stopping using Comcast as your ISP, email can only be accessed online, that should be mentioned in the notes about being able to use it as long as you check it at least once every 90 days.

Official Employee

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2.2K Messages

We appreciate your feedback @Zeek69 and are happy to forward it. To confirm, have you tried clearing the Outlook cache, or re-adding the account to Outlook?

 

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

New Poster

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15 Messages

I just tried sending email from outlook on my phone to my gmail account while not connected to wifi and it worked fine. So it does appear to be your system blocking my IP address from sending email.

Official Employee

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2.2K Messages

Ok, thank you for letting us know that @Zeek69. Unfortunately, our team doesn't have a way to unblock IP addresses. I would recommend reaching out to our amazing Customer Security Assurance (CSA) team. They can be contacted directly at 1-888-565-4329 and their hours of operation are 8:00am - 12:00am EST, 7 days a week.

 

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

New Poster

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15 Messages

@XfinityAlyssaA​ Regarding removing and adding my account from outlook, yes I have done that with no change except loosing all of my contacts, calendar items, and notes. Yes I had also tried clearing cache before removing my account.

(edited)

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