I need a solution
We are always fighting issues with receiving emails from mimecast servers.
The error we see is Rejected by MTA.
An IP lookup shows connection class 4 with all emails being differed.
the sender is getting this message.
could not be delivered. The problem appears to be :
-- Recipient server unavailable or busy
Additional information follows :
-- 4.3.2 try again later
This condition occurred after 30 attempt(s) to deliver over a period of 92 hour(s).
If you sent the email to multiple recipients, you will receive one of these messages for each one which failed delivery, otherwise they have been sent.
This enhanced system notification has been specially generated for you by Mimecast - the brain for your email.
Any useful suggestions?
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