community backup mx-ing
I run MX for my domains, some good friends do the same. Let’s be backup MX for eachother…
- Everyone should have strong anti-spam server settings. If there’s a weak link then it’ll be exploited by spammers. They love backup mx’s.
- Make similar changes to your sendmail.mc:
define(`confTO_QUEUEWARN’,`8d’)dnl
define(`confTO_QUEUEWARN_NORMAL’,`9d’)dnl
define(`confTO_QUEUEWARN_URGENT’,`7d’)dnl
define(`confTO_QUEUEWARN_NOURGENT’,`10d’)dnl
define(’confTO_QUEUERETURN’,'16d’)dnl - Add your friends domains to relay-domains
- Add something like this to mailertable:
fif3.com esmtp:[mail.fif3.com]
.fif3.com esmtp:[mail.fif3.com] - Remake sendmail.cf and mailertable hash and restart sendmail. Done.