Comcast not acting on changed mx record

[Old_Professor]

An organization that I belong to has changed its email hosting service from FutureQuest to ZOHO. The IT administrator tells me that he made the necessary change in the mx record (whatever that is). But whenever I send email to that domain, I get a perminent error message from Comcast. It appears to me that Comcast is trying to send to FutureQuest rather than ZOHO. What can I do to get Comcast to recognize the change?

I'd rather not post the name of the domain or any specific email address in that domain on this public forum, but I'd be happy to provide it to someone who can help, probably a Comcast employee.

[CCCarole]

Try contacting for assistance.

Comcast Customer Security Assurance-------------------

Normal business hours (6:00 am to 2:00 am EST, 7 days a week)

1 - 888-565-4329

[Comcast_Support]

Hello @Old_Professor,  thanks for reaching out to our Forums! Sorry to hear about your email concerns. Did you happen to reach out to our Security Assurance Team about this corncern?

[Comcast_Support]

Hello @Old_Professor, thanks for reaching out to our Forums! We would be more than happy to assist you with this mx record concern. Can you please send a private message including your first and last name as it appears on the account?

To send a Private Message, please click “Comcast_Support” and click “send a message".