Dear All,
users in our domain are able to send and receive emails for all domains except for one domain and here is the issue,
1- when our user send email to xyz domain we receive a confirmation that email has been delivered, however the recipient says they haven't received any email.
2- when they try to send email to our domain, they are receiving error
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we have problem with one domain only is there any thing that i must check from my side to resolve this issue.....
