Linux 2.6 - man page for dnsblog (linux section 8postfix)
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dnsblog - Postfix DNS white/blacklist logger
dnsblog [generic Postfix daemon options]
The dnsblog(8) server implements an ad-hoc DNS white/blacklist lookup service. This may
eventually be replaced by an UDP client that is built directly into the postscreen(8)
With each connection, the dnsblog(8) server receives a DNS white/blacklist domain name, IP
address, and an ID. If the address is listed under the DNS white/blacklist, the dns-
blog(8) server logs the match and replies with the query arguments plus an address list
with the resulting IP addresses separated by whitespace. Otherwise it replies with the
query arguments plus an empty address list. Finally, The dnsblog(8) server closes the
Problems and transactions are logged to syslogd(8).
Changes to main.cf are picked up automatically, as dnsblog(8) processes run for only a
limited amount of time. Use the command "postfix reload" to speed up a change.
The text below provides only a parameter summary. See postconf(5) for more details includ-
config_directory (see 'postconf -d' output)
The default location of the Postfix main.cf and master.cf configuration files.
How much time a Postfix daemon process may take to handle a request before it is
terminated by a built-in watchdog timer.
Optional list of DNS white/blacklist domains, filters and weight factors.
The time limit for sending or receiving information over an internal communication
The process ID of a Postfix command or daemon process.
The process name of a Postfix command or daemon process.
queue_directory (see 'postconf -d' output)
The location of the Postfix top-level queue directory.
The syslog facility of Postfix logging.
syslog_name (see 'postconf -d' output)
The mail system name that is prepended to the process name in syslog records, so
that "smtpd" becomes, for example, "postfix/smtpd".
smtpd(8), Postfix SMTP server
postconf(5), configuration parameters
syslogd(5), system logging
The Secure Mailer license must be distributed with this software.
This service was introduced with Postfix version 2.8.
IBM T.J. Watson Research
P.O. Box 704
Yorktown Heights, NY 10598, USA
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