So does this happen randomly? or just one time?
I think this is your problem:
Code:
Jun 13 10:34:42 linux postfix/postmap[27663]: fatal: bad numerical configuration: message_size_limit =
Jun 13 10:34:46 linux postfix/postsuper[27665]: fatal: bad numerical configuration: message_size_limit =
Jun 13 10:34:48 linux postfix/postalias[27668]: fatal: bad numerical configuration: message_size_limit =
Jun 13 10:34:49 linux postfix[27670]: fatal: bad numerical configuration: message_size_limit =