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MAKESMTPACCESS, MAKE(8)	    Double Precision, Inc.     MAKESMTPACCESS, MAKE(8)

NAME
       makesmtpaccess - Build ESMTP server access file

SYNOPSIS
       makesmtpaccess

       makesmtpaccess-msa

DESCRIPTION
       makesmtpaccess rebuilds the contents of the
       /usr/local/etc/courier/smtpaccess.dat database from the contents of the
       files in the /usr/local/etc/courier/smtpaccess directory. When the
       esmtpd script starts couriertcpd, the script specifies
       /usr/local/etc/courier/smtpaccess.dat file to control access to the
       Courier mail server´s ESMTP daemon. The makesmtpaccess script must be
       run before any changes in the /usr/local/etc/courier/smtpaccess
       directory take effect.

       The couriertcpd(8)[1] manual page describes the general format of the
       access file.

       The default Courier mail server configuration uses the same access
       file, /usr/local/etc/courier/smtpaccess.dat for both the regular ESMTP
       server, and the message submission server on port 587 (RFC 2476[2]). It
       is possible to use different access files. To do so, create a different
       access file, edit /usr/local/etc/courier/esmtpd-msa, and set ACCESSFILE
       to the filename of the access file directory (the directory containing
       the plain text files, not the .dat file). Then, use makesmtpaccess-msa
       instead of makesmtpaccess to build the .dat file.

   The smtpaccess configuration file
       The couriertcpd(8)[1] manual page describes the generic format of the
       access file. The access file specifies what should be done with
       connections from defined IP address ranges. The basic choices are to
       accept or reject the connection. Also, the generic format of the access
       file allows arbitrary environment variables to be set based on the
       connection´s remote IP address.

       The Courier mail server´s ESMTPD server understands the following
       environment variables, which may be set in the access file:

       BLOCK
	   If this variable is set to a non-empty value, all mail will be
	   rejected for this connection. The contents of the environment
	   variable will be used as the error message. This is not the same as
	   the couriertcpd access file setting that immediately drops the
	   connection. The incoming connection is accepted, but every message
	   will be rejected.

       FAXRELAYCLIENT
	   Allow the client to send faxes via the courierfax(8)[3] module.

	       Note
	       When ESMTP authentication is enabled, a successful
	       authentication automatically sets FAXRELAYCLIENT.

       RELAYCLIENT
	   Allow the client to relay mail.

	       Note
	       When ESMTP authentication is enabled, a successful
	       authentication automatically sets RELAYCLIENT.

       The following options are typically set globally in the esmtpd
       configuration file, but may be overriden in the smtpaccess
       configuration file:

       BOFHCHECKDNS
	   Do not check the return address´s domain in DNS if this environment
	   variable is set to 0. The default value of BOFHCHECKDNS is 1.

	       Note
	       Turning off the DNS check disables a number of options in the
	       bofh configuration file. See courier(8)[4] for more
	       information.

       BOFHCHECKHELO
	   Set this variable to 1 to check the hostname argument to the ESMTP
	   HELO/EHLO command, as follows:

	   ·   A hostname that´s actually an IP address, and is the same as
	       the connecting ESMTP client´s IP address, is valid.

	   ·   Otherwise hostname should be a valid DNS name with MX and/or A
	       records, with at least one record matching the connecting ESMTP
	       client´s IP address.

	   ·   An ESMTP client with relaying privileges (either due to
	       RELAYCLIENT explicitly set, or if it succesfully authenticates)
	       may use anything for an EHLO/HELO. The EHLO/HELO argument
	       coming from an authenticated/relaying client is not checked.

       BOFHNOEXPN
	   Disable the EXPN command if this environment variable is set to 1.

       BOFHNOVRFY
	   Disable the VRFY command if this environment variable is set to 1.

       Other useful environment variables are listed in the submit(8)[5]
       manual page.

SEE ALSO
       esmtpd(8)[6], couriertcpd(8)[1], submit(8)[5].

AUTHOR
       Sam Varshavchik
	   Author

NOTES
	1. couriertcpd(8)
	   [set $man.base.url.for.relative.links]/couriertcpd.html

	2. RFC 2476
	   http://www.rfc-editor.org/rfc/rfc2476.txt

	3. courierfax(8)
	   [set $man.base.url.for.relative.links]/courierfax.html

	4. courier(8)
	   [set $man.base.url.for.relative.links]/courier.html

	5. submit(8)
	   [set $man.base.url.for.relative.links]/submit.html

	6. esmtpd(8)
	   [set $man.base.url.for.relative.links]/esmtpd.html

Courier Mail Server		  02/10/2011	       MAKESMTPACCESS, MAKE(8)

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