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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
       access files.

       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)
	   http://www.courier-mta.org/couriertcpd.html

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

	3. courierfax(8)
	   http://www.courier-mta.org/courierfax.html

	4. courier(8)
	   http://www.courier-mta.org/courier.html

	5. submit(8)
	   http://www.courier-mta.org/submit.html

	6. esmtpd(8)
	   http://www.courier-mta.org/esmtpd.html

Courier	Mail Server		  01/22/2022	       MAKESMTPACCESS, MAKE(8)

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