pop3
I am using POP3 to get my Exchange/Outlook email into Gmail.
Whenever Gmail attempts to receive mail, the following error occurs:
Error: Server is temporarily unavailable. Mail cannot be retrieved from this account at this time.
With the following details:
Server returned error "Error in RETR command: Message corrupted"
However, the mail does seem to be downloaded correctly – and when I run the Exchange health analyzer, it says that my POP3 is setup correctly.
What is going on?
You may have to tell gmail to let you download previously downloaded mail.
From Google Support article Too many simultaneous connections :
Gmail currently has a limit of 15 simultaneous IMAP connections per account.
Please note that your mail client may actually open multiple connections in the background. This means it's possible to reach a connection threshold simply by using only two mail clients to access the same account at the same time.
You have apparently too many client connections toward the same account. I also conclude that Outlook is apparently pretty wasteful on the number of connections.
If you are using the very same account from multiple computers, then this is your problem. Gmail is really made to be invoked with only one unique gmail account per computer.
I believe that the password request dialog is just a rather lame attempt by Outlook to "solve" the connection problem.
Best Answer
It sounds like an email is corrupted on the server. It will skip this email and give this message. Does it tell you which email it is? Can you delete it from the server?