Sorry SLEZ, I can't see you "DAEMON_OPTION" stated on which port your sendmail MTA going to listen to.

Basic troubleshoot by running $:netstat -tulpn to locate your sendmail listening port. If it's not there, start it 1st, if stil not there, uncomment your sendmail by removing "dnl" as below :

dnl DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl

to

DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl