The SMTP service on toolserver.org is not responding from tools-mail:
scfc@tools-mail:~$ sudo exim -v -M 1ZeuQb-0001fr-MR delivering 1ZeuQb-0001fr-MR Connecting to toolserver.org [10.68.16.162]:25 ... failed: Connection refused LOG: MAIN toolserver.org [10.68.16.162] Connection refused LOG: MAIN == valhallasw@toolserver.org R=dnslookup T=remote_smtp defer (111): Connection refused scfc@tools-mail:~$