Sendmail Scondary MX and SMART HOST

muralee29477 · 04-08-2008, 11:44 AM

Hi all

I am running a sendmail server which is used as

- secondary MX
- as a smarthost

requirment :-

for customer domain (test.com) i have confiugred my server as a secondary mail server BUT i want to restrict the customer by any means
to stop using my smtp server as a smart host

please help

datopdog · 04-09-2008, 04:51 AM

Do not relay mail for their netblock, just provide backup mx functionality for their domain. In sendmail terms that means removing their netblock from the access db.

muralee29477 · 04-09-2008, 12:39 PM

Tks for the reply

i am bit confused correct me if i am wrong

after configuring the seconday mx I will be entering the doamin name in access file therefore by doing this am i preventing them using the same server as a smart host

please advice

datopdog · 04-09-2008, 04:32 PM

No thats not correct actually you need to put the domain name in /etc/mail/relay-domains and set your mailertable to point to the primary MX bypassing DNS