Why would email be undeliverable?

Modified on Thu, 13 Nov 2014 at 01:39 PM

There are several reasons why email is sometimes undeliverable:

  • the recipient does not have an email account on the mail server (the email address is invalid)
  • the recipient is over his/her email quota and is unable to receive any new email until his/her inbox is cleaned out
  • the email size is greater than the maximum size the recipient's mail server allows
  • the mail message inadvertently gets caught in spam/virus traps or junkmail/other filters

Undelivered mail does not always automatically get delivered when the problem clears up, so be sure to send your email again at a later time after you have verified the recipient's email address.

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