sbcglobal.net I dont receive emails from some people. they get bounced back 554 error

Hi @kmdh! Thank you for reaching out to us! We understand that you're not receiving emails from some people. We hear you, and are happy to assist you.

There are several reasons on why you might not be receiving email from a specific user. Please check on the below steps:

You may have blocked either their email address or domain extensions (for example, com, org, net). Check if you have the Blocked Addresses feature enabled:

1. In the upper right-hand corner, select the Gear, and choose More Settings to access Settings. 
2. On the Settings menu, in the left-hand column, select Security and Privacy. 
3. Under Blocked Addresses in the right-hand window, you can check for any email addresses being blocked. 
4. Scan the list of blocked addresses for the ID of the account being investigated.
   Heads up: You could've block a whole domain if you do not enter a valid email address. Check all blocked addresses listed.
5. To remove a blocked address, highlight it and click the trash can icon. 

If no erroneous blocks were found, or no blocked addresses exist, check the filters. You may have created email filters.

1. In the upper-right corner, select the Gear, and choose More Settings to access Settings. 
2. On the Settings menu, from the left-hand column, select Filters. 
3. Check for any existing filters that may have triggered, causing messages to route to a specified folder. Highlight the filter name to view what the filter is directing the mail to do. You can edit the filter from here.
   • Example 1: You created a filter to route messages with pizzahut.com in the From field to the folder named Trash. 
     • If this is an email you assume is missing, please check the folder for the message(s) in question.
     • If the messages are found, please check filters/folders. You can leave the filters as is, edit, or delete as they see fit.

Also, please try resetting your password as this could help resolving the issue.

Let us know how it goes!

For further assistance we're here to help.

Thank you for contacting AT&T Community Forums!

Nate, AT&T Community Specialist.

Thanks for the quick and detailed response.  So, one thing to note:  Some of those senders who have received bounce back messages when sending me an email are individuals who have in the past successfully sent me emails.

I did check both the blocked email addresses and the filter.  I did not find their email addresses in the blocked and I don't have any filters.

Anything else you can suggest?

Thanks,

Joe