Local addresses are looked up in a file and aliased appropriately. Aliasing can be prevented by preceding the address with a backslash. Beginning with 8.10, the sender is included in any alias expansions, e.g., if 'john' sends to 'group', and 'group' includes 'john' in the expansion, then the letter will also be delivered to 'john'.
Use submit.cf even if the operation mode does not indicate an initial mail submission.
Use sendmail.cf even if the operation mode indicates an initial mail submission.
Set the body type to type. Current legal values are 7BIT or 8BITMIME.
Go into ARPANET mode. All input lines must end with a CR-LF, and all messages will be generated with a CR-LF at the end. Also, the ''From:'' and ''Sender:'' fields are examined for the name of the sender.
Run as a daemon. Sendmail will fork and run in background listening on socket 25 for incoming SMTP connections. This is normally run from /etc/rc.
Same as -bd except runs in foreground.
Print the persistent host status database.
Purge expired entries from the persistent host status database.
Initialize the alias database.
Deliver mail in the usual way (default).
Print a listing of the queue(s).
Print number of entries in the queue(s); only available with shared memory support.
Use the SMTP protocol as described in RFC821 on standard input and output. This flag implies all the operations of the -ba flag that are compatible with SMTP.
Run in address test mode. This mode reads addresses and shows the steps in parsing; it is used for debugging configuration tables.
Verify names only - do not try to collect or deliver a message. Verify mode is normally used for validating users or mailing lists.
Use alternate configuration file. Sendmail gives up any enhanced (set-user-ID or set-group-ID) privileges if an alternate configuration file is specified.
- -D logfile
- Send debugging output to the indicated log file instead of stdout.
- Set the debugging flag for category to level. Category is either an integer or a name specifying the topic, and level an integer specifying the level of debugging output desired. Higher levels generally mean more output. More than one flag can be specified by separating them with commas. A list of numeric debugging categories can be found in the TRACEFLAGS file in the sendmail source distribution. The option -d0.1 prints the version of sendmail and the options it was compiled with. Most other categories are only useful with, and documented in, sendmail's source code.
- Set the full name of the sender.
Sets the name of the ''from'' person (i.e., the envelope sender of the mail). This address may also be used in the From: header if that header is missing during initial submission. The envelope sender address is used as the recipient for delivery status notifications and may also appear in a Return-Path: header. -f should only be used by ''trusted'' users (normally root, daemon, and network) or if the person you are trying to become is the same as the person you are. Otherwise, an X-Authentication-Warning header will be added to the message.
Relay (gateway) submission of a message, e.g., when rmail calls sendmail .
Set the hop count to N. The hop count is incremented every time the mail is processed. When it reaches a limit, the mail is returned with an error message, the victim of an aliasing loop. If not specified, ''Received:'' lines in the message are counted.
Ignore dots alone on lines by themselves in incoming messages. This should be set if you are reading data from a file.
Set the identifier used in syslog messages to the supplied tag.
Set delivery status notification conditions to dsn, which can be 'never' for no notifications or a comma separated list of the values 'failure' to be notified if delivery failed, 'delay' to be notified if delivery is delayed, and 'success' to be notified when the message is successfully delivered.
Don't do aliasing.
- -O option=value
- Set option option to the specified value. This form uses long names. See below for more details.
- -ox value
- Set option x to the specified value. This form uses single character names only. The short names are not described in this manual page; see the Sendmail Installation and Operation Guide for details.
- Set the name of the protocol used to receive the message. This can be a simple protocol name such as ''UUCP'' or a protocol and hostname, such as ''UUCP:ucbvax''.
- Process saved messages in the queue at given intervals. If time is omitted, process the queue once. Time is given as a tagged number, with 's' being seconds, 'm' being minutes (default), 'h' being hours, 'd' being days, and 'w' being weeks. For example, '-q1h30m' or '-q90m' would both set the timeout to one hour thirty minutes. By default, sendmail will run in the background. This option can be used safely with -bd.
- Similar to -qtime, except that instead of periodically forking a child to process the queue, sendmail forks a single persistent child for each queue that alternates between processing the queue and sleeping. The sleep time is given as the argument; it defaults to 1 second. The process will always sleep at least 5 seconds if the queue was empty in the previous queue run.
Process saved messages in the queue once and do not fork(), but run in the foreground.
- Process jobs in queue group called name only.
- Limit processed jobs to those containing substr as a substring of the queue id or not when ! is specified.
- Limit processed jobs to quarantined jobs containing substr as a substring of the quarantine reason or not when ! is specified.
- Limit processed jobs to those containing substr as a substring of one of the recipients or not when ! is specified.
- Limit processed jobs to those containing substr as a substring of the sender or not when ! is specified.
- Quarantine a normal queue items with the given reason or unquarantine quarantined queue items if no reason is given. This should only be used with some sort of item matching using as described above.
- -R return
- Set the amount of the message to be returned if the message bounces. The return parameter can be 'full' to return the entire message or 'hdrs' to return only the headers. In the latter case also local bounces return only the headers.
An alternate and obsolete form of the -f flag.
Read message for recipients. To:, Cc:, and Bcc: lines will be scanned for recipient addresses. The Bcc: line will be deleted before transmission.
- -V envid
- Set the original envelope id. This is propagated across SMTP to servers that support DSNs and is returned in DSN-compliant error messages.
Go into verbose mode. Alias expansions will be announced, etc.
- -X logfile
- Log all traffic in and out of mailers in the indicated log file. This should only be used as a last resort for debugging mailer bugs. It will log a lot of data very quickly.
Stop processing command flags and use the rest of the arguments as addresses.