Sendmail supports IPv6 protocol from version 8.12.
The installation from source code
The installation from a repository
The verification of Sendmail version
The installation from source code.
To install the Sendmail server from source - download it from the official vendor site: http://www.sendmail.com/sm/open_source/download/
Next log into the superuser.
Unpack the downloaded content using a command:
tar xzf name_of_dowloaded_sendmail.tar.gz
Next go to directory of where Sendmail is unpacked. Enter the command:
make
Then use a command:
make install
apt-get install sendmail
yum install sendmail
zypper install sendmail
To configure Sendmail server for IPv6 support, edit the sendmail.mc file (usually /etc/mail) and add the line:
DAEMON_OPTIONS(`Port=smtp, Name=MTA, Family=inet6')dnl
Afterward restart the sendmail daemon by following command:
/etc/init.d/sendmail restart