make config
will present you with the options. Then you can re-compile.What features though? If you check /usr/share/sendmail/cf you'll notice that there's already quite a lot available by default. So you may not even need to rebuild but merely use the right configuration files.If I want or need to add additional features to sendmail, can I not just do an rfconfig in /usr/ports/mail/sendmail/ and then recompile it ?
Jan 4 10:17:09 www sm-mta[32509]: w04GH8ZR032509: Authentication-Warning: domain.com: Host [172.58.139.128] claimed to be [172.20.10.2]