やっぱり、外部とのmail.s-lines.netのSMTPが落ちているもより

Openmya 
3:19 parsley[isamik] telnet -4 mail.s-lines.net 25                          [~]
Trying 219.111.14.214...
telnet: connect to address 219.111.14.214: Operation timed out
telnet: Unable to connect to remote host

3:19 parsley[isamik] telnet -6 mail.s-lines.net 25                          [~]
Trying 2001:268:304:8a00::1...
telnet: connect to address 2001:268:304:8a00::1: Host is down
telnet: Unable to connect to remote host