Subject: Re: Setting up mail server
arthur@corlissfamily.org
Date: Wed Dec 26 2001 - 16:36:32 AKST
On Wed, 26 Dec 2001, James Bagley Jr. wrote:
> Clearly, sendmail doesn't realize that it should be the final destination
> for mail sent to 'techalaska.com'. It is also advertising a host
> 'sspeedy.techalaska.com' that doesn't exist, this will cause problems when
> you try to send mail. Your mail server should advertise the hostname
> resolved by a reverse lookup of your ip address, which is:
>
> cable-186-3-237-24.anchorageak.net
>
> and, your mail server should accept delivery of mail sent to
> techalaska.com
>
> If you can figure out how to make sendmail do those two things you are in.
Do a grep on /etc/mail/sendmail.cf for '.cw'. If there's lines
similar to the following:
##### $Id: use_cw_file.m4,v 8.9 1999/02/07 07:26:13 gshapiro Exp $ #####
Fw-o /etc/mail/sendmail.cw
then all should need to do is put each of the domains you're accepting mail
for in that file (assuming your MX records in DNS are already correct).
For those that think that sendmail is daunting, it can be as easy as this:
Create a macro conf-generation file wil the desired options, like the
following example (I typically name this file sendmail.mc):
FEATURE(virtusertable, `hash -o /etc/mail/virtusertable.db' )dnl
FEATURE(access_db, `hash -o /etc/mail/access.db' )dnl
FEATURE(use_cw_file, `/etc/mail/sendmail.cw')dnl
FEATURE(use_ct_file, `/etc/mail/sendmail.ct')dnl
FEATURE(nouucp, reject)dnl
FEATURE(redirect)dnl
FEATURE(smrsh, `/usr/sbin/smrsh')dnl
dnl "SPfhn9" are local_procmail's defaults, "u" is appended to force case
dnl sensitive user checking
FEATURE(local_procmail, `/usr/bin/procmail', `', `SPfhn9u')dnl
define(`confME_TOO', True)dnl
define(`confCW_FILE', `-o /etc/mail/sendmail.cw')dnl
define(`confCT_FILE', `-o /etc/mail/sendmail.ct')dnl
define(`STATUS_FILE', `/var/log/sendmail.st')dnl
define(`ALIAS_FILE', `/etc/mail/aliases')dnl
define(`confPRIVACY_FLAGS', `goaway')dnl
define(`confMAX_RCPTS_PER_MESSAGE', 10)dnl
undefine(`confALIAS_WAIT')dnl
MAILER(local)dnl
MAILER(smtp)dnl
Cwlocalhost
That done, go to your sendmail source/cf directory, and create the
configuration file:
m4 m4/cf.m4 ~/sendmail.mc > /etc/mail/sendmail.cf
From that point, it's just putting the appropriate values in the rest of the
files under /etc/mail:
sendmail.cw # domains to accept mail for
sendmail.ct # 'trusted' user accounts
access # hosts/accounts to allow relaying/delivery
virtusertable # account/domain mapping & constraints
aliases # account to account/list mappings
Three of those text files (access, virtusertable, & aliases) are used to
create db files for faster access by sendmail. To build those databases, use
the following (or put them into a script):
# Build aliases.db
sendmail -bi
# Build other dbs
makemap hash virtusertable.db < virtusertable
makemap hash access.db < access
Now that your sendmail is completely reconfigured, start it up:
sendmail -bd -q15m
:-) Pretty easy, eh? There's a hell of a lot more that can be done, but
that's a nutshell version of it.
--Arthur Corliss
Bolverk's Lair -- http://arthur.corlissfamily.org/
Digital Mages -- http://www.digitalmages.com/
"Live Free or Die, the Only Way to Live" -- NH State Motto
This archive was generated by hypermail 2a23 : Wed Dec 26 2001 - 16:36:26 AKST