And, it uses a pager , so that you get to see one page at the time. The pager works exactly like less. Each entry contains a lot of information, and the entries are terse. We have slightly simplified the log entry for readability:. The log file lists both incoming and outgoing emails. The second line shows the email was delivered to sales example. What this means is that the email was delivered to a user on the server. It is worth noting that emails for local users are delivered by Dovecot rather than Exim.
Remote deliveries are always managed by Exim. In that case Exim looks up where the email should be delivered to. Here is an example:. This email was sent from the example. The email has one recipient: support catalyst2.
Because catalyst2. It next sent the email to the remote server. The log entry also shows that the remote server accepted the email for delivery. If these two examples made sense then you can already debug many common issues. This can cause delivery issues. Because mail for example. The above email bounced.
Emails may also be frozen in the mail queue. In that case Exim tries to deliver the email at a later time:. As said, Exim tries to redeliver emails that are stuck in the queue. Remote servers can of course also reject emails coming from your server. Such emails usually have a bounce message that explains why the email was rejected. Here are some examples:. Our system has detected an unusual rate of unsolicited mail originating from your IP address. To protect our users from spam, mail sent from your IP address has been temporarily rate limited.
Please resend your message at a later time. If the user is able to receive mail at that time, your message will be delivered. This is, for better or worse, often used to combat spam. Unfortunately, it is very easy to create a rule that accidentally matches a perfectly legitimate email. This is a special file on Unix systems that simply discards anything sent to it. So, the email was purged. In addition to user filters there are also server-wide filters. You can double-check if the email was indeed purged because of a user filter.
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In this digital day and age, it is incredibly important to have a website. Configuration mailman-related exim. The following selection options are available: -f Match the sender address using a case-insensitive search.
The field that is tested is not enclosed in angle brackets. The following options control the format of the output: -c Display only the count of matching messages. This is the default. The purpose of this is to check exims ACLs and filters. If a recipient-verify callout connection is requested in the same ACL it is held open and used for the data, otherwise one is made after the ACL completes.
Records should be represented as: addonor. If it appear correct, you can run named-checkzone domain. Diagnostic-Code: X-Postfix; host mail1. Final-Recipient: rfc; [email protected] Action: failed Status: 5.
Reactions: Jayvee Sagarino , kernow , m. Latest reviews kernow 5. Read more…. Top Bottom. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. By continuing to use this site, you are consenting to our use of cookies. Accept Learn more…. This applies both to global rewrites and per-transport rewrites, but not to rewrites in filters run as an unprivileged user because such users cannot access the log.
Normally only the original and final addresses are logged on delivery lines; with this selector, intermediate parents are given in parentheses between them.
Various other types of log entry are written from time to time. Most should be self-explanatory. Among the more common are:. This message is not written to an individual message log file unless it happens during the first delivery attempt. This can be quite common if queue running processes are started at frequent intervals. The exiwhat utility script can be used to find out what Exim processes are doing.
The bounce was discarded. The delivery was discarded. The list of optional log items is in the following table, with the default selection marked by asterisks:. The logging does not happen if Exim has given up root privilege because it was called with the -C or -D options. Arguments that are empty or that contain white space are quoted. Non-printing characters are shown as escape sequences. This facility cannot log unrecognized arguments, because the arguments are checked before the configuration file is read.
If millisecond logging is enabled, short times will be shown with greater precision, eg. For acceptance this covers the reverse and forward lookups for host name verification. It does not cover helo-name verification.
See This will be either because the message is a bounce, or was submitted locally submission mode without one. This option is not included in the default setting, because for most ordinary configurations, the remote port number is always 25 the SMTP port , and the local port is a random ephemeral port. The field is a single "L".
Delivery "L" fields have an asterisk appended if used. The addresses are listed after they have been qualified, but before any rewriting has taken place. This is the original sender that was received with the message; it is not necessarily the same as the outgoing return path.
A number of MTAs including Exim return an identifying string in this response. If a connection is dropped in the middle of a message, a log line is always written, whether or not this selector is set, but otherwise nothing is written at the start and end of connections unless this selector is enabled.
Also, because connections are closed and the closure is logged in subprocesses, the count may not include connections that have been closed but whose termination the daemon has not yet noticed.
Thus, while it is possible to match up the opening and closing of connections in the log, the value of the logged counts may not be entirely accurate. This can provide evidence of dictionary attacks. This includes both the case when the connection is dropped, and the case when QUIT is used. It does not include cases where the connection is rejected right at the start by an ACL, or because there are too many connections, or whatever.
These cases already have their own log lines. For example,. If there were fewer than 20 commands, they are all listed. Exim does not have perfect detection of all protocol errors because of transmission delays and the use of pipelining. An unrecognized command is treated as a syntax error. For an external connection, the host identity is given; for an internal connection using -bs the sender identification normally the calling user is given.
In addition to the general log files, Exim writes a log file for each message that it handles. The names of these per-message logs are the message ids, and they are kept in the msglog sub-directory of the spool directory. Each message log contains copies of the log lines that apply to the message. This makes it easier to inspect the status of an individual message without having to search the main log.
In the log file, this would be all on one line: SMTP connection from [ Where the logs are written The logs may be written to local files, or to syslog, or both. Logging to local files that are periodically cycled Some operating systems provide centralized and standardized methods for cycling log files. Datestamped log files Instead of cycling the main and reject log files by renaming them periodically, some sites like to use files whose names contain a datestamp, for example, mainlog
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