Recently changed ip addresses, all of our email to AOL & Verizon domains were getting bounced by AOL. We are using Exchange 2013 with the latest build CU18.Īnd good luck dealing with them. We checked the DNS with mxtoolbox and Opens a new windowĪnd both comes back with our Our PTR and REVERSE DNS are configured propyl
I asked the user if the person she was sending to had added her to the junk filter by accident, she said she already checked with them and they said no.ĭoes anyone have any idea what this error could mean? Or are there any troubleshooting steps I could take to find a more detailed reason for this error? I am leaning toward this being a issue with the AOL user but I want to make sure there is nothing I can do on my end to resolve this for the user. If I go to the AOL link found in the NDR error 521 is not listed: Generating server: #521 5.2.1 : (CON:B1) Opens a new window # If the problem continues, please contact your helpdesk.ĭiagnostic information for administrators: There's a problem with the recipient's mailbox. Mtaig-mcc01.mx. rejected your message to the following e-mail ( gave this error: Aol returns the following error in the NDR: This person has been able to send email to these people without issues before and other users in the organization can still send. However, in the last few days one of our users started having problems sending to certain aol accounts. I have an exchange server setup that has been working very well.
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