old employees appear in the Mail Manager who no longer exist in the AD.
They are still receiving emails from Sophos, although these mail addresses are no longer present in Exchange.
Verified by the following Powershell script:
get-recipient -results unlimited | where {$_.emailaddresses -match "user@domain.com"} | select name,emailaddresses,recipienttype
Sophos will then try to deliver the mail to the old employee and Exchange will send a mail to do-not-reply@fw-notify.net
The error Message is "Remote Server returned '550 5.1.1 RESOLVER.ADR.RecipNotFound; not found'"
Telnet :
MAIL FROM: existuser@***x.com
250 sender ok
RCPT TO: notexistuser@***.com
550 5.1.1 user unknown
I have also encountered the following link:
Unfortunately I cannot find a solution here.
Can anyone help me with that?
Mailaddress query in Exchange Management Shell
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