asked on Email Bounce issue
one of my user send email to few internal and one external recipient and he got below bounce back message. Remote Server returned '550 4.4.7 QUEUE.Expired;. Not sure the cause of this error. i verified message log header and find only suspected thing is message content type shows : application/ms-tnef; name="winmail.dat".
Exchange 2013 and outlook 2013
Exchange 2013 and outlook 2013
Email ClientsEmail Servers
Last Comment
Manoj Bojewar
Don't worry about the winmail.dat line, that's normal. Assuming this is an Exchange server, check the SMTPSend protocol logs for a detailed view of the SMTP conversation between your server and the recipeints:
%ExchangeInstallPath%\Tran
The path for Exchange 2013 is:
%ExchangeInstallPath%\Tran
Verbose logging has to be enabled:
https://technet.microsoft.com/en-us/library/bb124531(v=exchg.150).aspx
%ExchangeInstallPath%\Tran
The path for Exchange 2013 is:
%ExchangeInstallPath%\Tran
Verbose logging has to be enabled:
https://technet.microsoft.com/en-us/library/bb124531(v=exchg.150).aspx
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it almost take 15 days for me to identify this problem.
That way you know if it's YOUR queue that's expired, or the other queue.
Assuming for now that it's your own queue, check your logs or use Wireshark to check the whole email conversation why the email is not being accepted. If nothing shows, it could be a wrong email address or DNS entry (and your mail server tries to connect to an IP that's not responding).