I can send E-mails from my office 365 accounts (previously Live@Edu) but I can't receive emails using them. After the failure in sending mail to these accounts, I always receive Failure of Delivery message from my server similar to the following:
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** THIS IS A WARNING MESSAGE ONLY **
** YOU DO NOT NEED TO RESEND YOUR MESSAGE **
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The original message was received at Tue, 22 Jan 2013 10:11:16 GMT
from localhost [127.0.0.1]
----- Transcript of session follows -----
<alnajem@arts.kuniv.edu.kw>... Deferred: Connection timed out with arts.kuniv.edu.kw.
Warning: message still undelivered after 4 hours
Will keep trying until message is 5 days old