Gmail - Authentication Failed

[outro]

I have a very strange problem. I have two gmail accounts set up with Zimbra, but several days ago one of them stopped working and says "User account authentication failed. Please check username and password." I'm sure of my login details because I can log in to my gmail account through their website. I think it still can synchronize but I can't send any emails. Strange fact is that my other account seems to be working fine. Anyone experiencing the same problem?

[felis]

Try to login from Gmail website. Several months ago, I experienced the same problem. For several weeks I thought there were a problem with my Zimbra or my internet connection. However, when I entered Gmail website, they said my Gmail account had been deleted because they thought that I had abused my account - which is actually not true

[outro]

Like I said, I can log in from the gmail website... I really can't find any explanation why Zimbra can't work with my account.