Internal Email Failure after Domain Renewal

Sure hope someone can help with this?

Comcast Businessclass customer, using Outlook on the local machines.

We inadvertently allowed our domain registration to expire. This was discovered when no emails were received yesterday for a 12-hour period. We immediately renewed and I corrected the nameservers which had changed to "expired". Over the next 24 hours, we slowly saw increased email traffic and useability. I 'beleive' we are receiving all inbound messages, and it seems that our outbound messages are successfull as well.

HOWEVER:

Messages sent from our domain TO our domain are unsuccessful, unless done from the webmail interface (!?!). No error messages are given.

an example: If I use outlook to send an email from ME_at_MYDOMAIN to THEM_at_MYDOMAIN, the message dissapears with no trace. But if I send the same message using my Webmail Interface, it successfuly reaches all parties.

Please help? Ideas?

Thanks.

Responses

Comcast_Jon

Administrator

•

1.5K Messages

11 years ago

Hello crltg,

Welcome to the forum.

Based on your post this may be a outlook profile issue. I say this because your outgoing mails to other domain and webmail working properly shows, it is not a DNS entry issue.

I would recommend the following for testing:

1. Setup a new profile on a computer with one of your email account.

2. Try sending from this email to another user in your domain

- cc the message to another domain for verification of message being sent.

3. Check to see if the other user receives the message.

Thank you

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crltg

Visitor

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5 Messages

11 years ago

Thanks for your help, Comcast_john.

I've done as you suggested and in the process have learned some things that leave me yet further scratching my head in confusion.

I've discovered that in fact our email does not work consistently when using the web interface, as I suggested in the earlier post. Many emails show as sent, but never arrive at their destination. No failure-notices are generated.

I have also learned that many emails from customers are not being received. Some of them began receiving failure-notices at about 6-hours after sending them messages. The failure-messages are not as frequent as the actual emails that have failed though.

When looking at the failure-notices, the ip address that ahs rejected them seems to have no relationship (that I can find) to either my domain / ip, nor the registrar, nor Comcast: (176.74.176.179)

Other theories?

again, thanks for your help.

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Comcast_Jon

Administrator

•

1.5K Messages

11 years ago

Hello crltg,

Based upon your new post, it appears your domain maybe on the block-list of recipient's mail servers.

For issues like this our security assurance group will of proper assistance.

Please check your private message for additional information.

Thank you

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