Connection failure

Hi, very often I recieve a message connection witth gmail failed. Is there maybe something wrong in the settings"? No right smtp number or so/ Thats what i suppose. Can you help me?d

please copy the error and the content of the log tab next time this error pops up.
To copy the Log just select all with Ctrl+A, CTRL+C to copy it and CTRL+V to copy it here.