The server is unable to connect or start an SMTP session.
Causes
Usually point to a configuration problem.
For example, incorrectly spelled the SMTP...
Timeout connection problem. The server Administrator of the receiving mail will have the option to confirm the real issue only.
Causes
Typically, as a...
Recipient mailbox has exceeded its storage limit.
Causes
It could be message delivery directory is running over sized
Mailbox has exceeded its stora...
Not enough space on the disk.
Causes
Number of recipients the email message has – receiving server cannot parse which of the recipients it is supposed...
Recipients exchange server incoming mail queue stopped.
Causes
Typically, due to a connection problem.
Fixes
Step 1: Contact NET For More Informatio...
The recipient server is not responding. This issue is explicitly regarding the recipient incoming mail server.
Causes
Used up all your data transfer quo...
The maximum of hop count was exceeded for the message. This means that your server does not know where to send the mail.
Cause
An internal loop has oc...
Your outgoing message timeout due to an issue that concerning the incoming server.
Causes
Issues concerning the incoming server
Happens generally wh...
A routing error that is related to Microsoft Exchange Server only. It is also similar to Error 432.
Causes
A message is sent to a receiver who was a m...
User mailbox is unavailable.
Causes
A process on the remote server is tidying up the mailbox
The remote mailbox could be corrupted
Remote mailbox ...
