hi all dont know if this is a problem or not but i turned my mail server off to do something to it, I turned it back on and sent a email from my hotmail account and it hasnt arrived and this has been 2hrs or just over, when i sent another email after that using the same account it come though. Could this be a problem with postfix etc or the hotmail server not sending it out yet because the server was just reconnected. thanks
Please check your mail log for errors. It might have been a temporary failure, in this case the other server would normally try for another 4 or 5 days to deliver the mail.
Actually 4hours is a standard waitng time, its more likely that it never arived then was resent 4 hours later