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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?

3 Answers 3

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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?

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  • It doesn't say which email is corrupted - I also tried deleting all lingering emails from the account on the server - I am still getting the same message.
    – William
    May 13, 2015 at 18:39
  • Did you check all folders? Sent items, Drafts, etc.?
    – rfportilla
    May 13, 2015 at 18:43
  • Of course - I deleted all of the calendar, items, contacts, and tasks as well -
    – William
    May 13, 2015 at 20:43
  • I'm not quite sure what is hanging up. The message just means that it is trying to retrieve something and failing. Short of using a debugger, I'm not sure what else to check. Using fetchmail on the command line with -vvv should do it.
    – rfportilla
    May 14, 2015 at 15:37
  • I figured it out - I had the gmail in as an alias for the mail user - when I removed it, gmail started being able to download via POP3 without any issues - I'm not sure why this would cause an issue from the Gmail side - but it seems to be working now.
    – William
    May 18, 2015 at 4:07
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This happened to my GMail for fetching outlook.com POP3. I re-entered correct password of my outlook.com account and GMail started working again.

(Strange that I just corrected the outlook.com account a few weeks ago.)

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One easy way to skip the corrupt mail:

Set fetch mail of last 30 days (90 days...) on POP setting of Exchange/Outlook email

After that my gmail fetched successfully.

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  • How do you do that? I have looked but can't find such an option.
    – Aenfa
    Jun 11, 2023 at 22:28

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