[lug] Sendmail Relay

[John Hernandez]

If there are multiple relays, you may want to check into using the
mailertable feature.  In mc speak,

FEATURE(`mailertable')

and /etc/mail/mailertable can be:

domain1 smtp:relayhost1
domain2 smtp:relayhost2

There are other good features.  For example, you can setup a catch-all
domain entry and also specify no MX matching on the destination (to
avoid MX loops under certain configurations):

.domain3 smtp:[relayhost3]

Read the cf/README file for more details.  I've used this before, and it
works very well.

"Atkinson, Chip" wrote:
> 
> (Red Hat centric) That should be possible.  You need to set the relay host
> to the machine that you are forwarding to and add the acceptable domains to
> /etc/mail/access.  Specifically,
> in /etc/sendmail.cf, add/modify the entry
> DSyourrelayhost
> 
> For example,
> DSez0.ezlink.com
> 
> Then in /etc/mail/access add the line(s)
> somedomain       RELAY
> someotherdomain  RELAY
> 
> cd /etc/mail;make
> 
> killall -HUP sendmail
> 
> That should do it.  You should then test it by tail -f /var/log/maillog
> whilst sending a message.  Examine your logs to make sure that the message
> went through.
> 
> Chip
> 
> -----Original Message-----
> From: Stephen G. Smith [mailto:ss2chef at hotmail.com]
> Sent: Wednesday, October 11, 2000 7:13 AM
> To: lug at lug.boulder.co.us
> Subject: [lug] Sendmail Relay
> 
> Hello all
> 
> How can I have Sendmail accept mail for domains and then forward
> it to another machine right away..?
> 
> Thanks,
> 
> SGS
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-- 

John Hernandez, Network Engineer --------------------------------------
US Department of Commerce                             tel: 303-497-6392
NOAA/OAR - Mailstop R/OM12                            fax: 303-497-6005
325 Broadway                            e-mail: John.Hernandez at noaa.gov
Boulder, CO 80303                               http://boulder.noaa.gov
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