There is no "official" server... there are just "public" servers available, that anyone is free to setup and run... If you are attempting to avoid the Electrum "fake error message" attack, it doesn't matter which server you connect to, they can't hack your wallet unless you download the fake version of Electrum.

According to the above posts, your version of Electrum is legit, so just connect to any Electrum server and try to send your transaction. If you get the fake error message:


IGNORE IT... DO NOT CLICK ON THE LINK!

Then go and change the server to something else and try again.