Miscellaneous config OptionsLinux Network Administrators GuidePrevChapter 19. Getting EximUp and RunningNextMiscellaneous config Options Here are a few of the more useful options you can set in the configuration file: message_size_limitSetting this option limits the size of message that Exim will accept.return_size_limitSetting this option limits the amount of an incoming message that Exim will return as part of a bounce message.deliver_load_maxIf the system load exceeds the value given for this option, all mail delivery is suspended, though messages are still accepted.smtp_accept_maxThis is the maximum number of simultaneous incoming SMTP calls Exim is prepared to accept. log_levelThis option controls the amount of material that is written to the log. There are also some options with names beginning with log _ that control the logging of specific information.PrevHomeNextMail Delivery ModesUpMessage Routing and Delivery