[Skunkworks] Orange 3g+ and email problems

I've been having some on/off smtp issues and opened some tests over the weekend. Emails can show as sent but are not received by the parties. Some include gmail/yahoo. - Some subnets are blacklisted. This led me to check further on reverses and possibly a root cause : Hostname: g-3-3-0-core-as12455.telkom.co.ke ISP: Kenyan Post & Telecommunications Company Organization: Nazarene University Proxy: None detected - Further checks on dnsbl revealed at least 4 problems. Is this Uni responsible for spam and blacklisting? Orange kenya need to isolate this problem asap.