MySQL, Java, JSP, Servlet, Tomcat and Jboss Web Hosting Blog

684 Part V . Running Servers Entries not associated with a message that has not been accepted into the queue will not have the message identifier or two-character flags. Some samples of these types of entries are included in the next section. Logging information for the Courier IMAP and POP daemons is saved to /var/log/ mail.log. Normal entries include LOGIN and LOGOUT messages. DISCONNECTED messages generally indicate that a connection was broken before a normal logout was performed. The tail utility is useful for watching for new entries to a log. Use the -f switch to instruct tail to watch for new entries and display them to the screen as they are written to the log. For example: tail -f /var/log/exim4/mainlog Common Errors (and How to Fix Them) There are two common types of problems that you will encounter with your server: messages being rejected or not delivered by Exim and login failures when connecting to Courier. Messages Rejected by Exim The first places to check when messages are rejected by Exim are the mainlog and rejectlog files. Here are examples of some common errors and tips for fixing them: . The following error indicates that the client sending the message is not recognized as a client by Exim and that the recipient domain is not in the list of local or relay domains: H=sample.client [1.2.3.4] F= rejected RCPT : relay not permitted If the client IP address will not change frequently or is in part of a trusted range of IP addresses, you can add them by running the following: # dpkg-reconfigure –priority=medium exim4-config The same command can also be used to add the recipient domain as a local or relay domain. Do not add client IP ranges unless you trust all of the users that can connect from those addresses. Likewise, do not add a domain as a relay domain unless you know the owner of the domain and have made arrangements to relay mail for them. Doing either of these incorrectly could open your server up as a relay that can be used by spammers to attack other sites. If the client IP address is likely to change frequently and is not part of a trusted range, you should either configure the client to use a mail server that is local to it or configure SMTP authentication in Exim. More information Caution Note
You need excellent and relaible webhost company to host your web applications? Then pay a visit to Inexpensive Web Hosting services.

This entry was posted on Monday, September 10th, 2007 at 10:03 am and is filed under PHP5. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.