Episode 8: Why does sendmail does not use NIS mail.aliases?

By default sendmail honors aliases defined only in /etc/aliases. To honor NIS mail.alaises map, edit the file /etc/mail/sendmail.mc

Change the following line:


Change

define(`ALIAS_FILE', `/etc/aliases')dnl

To

define(`ALIAS_FILE',`nis:mail.aliases@NIS-DOMAINNAME')dnl


For example, if the domain name is Example.com, the file may look like this:


define(`ALIAS_FILE',`nis:mail.aliases@Example.com')dnl


It may also look like this:




define(`ALIAS_FILE',`/etc/aliases,nis:mail.aliases@Example.com')