Code:
; <<>> DiG 9.5.0-P2 <<>> alliance.com.ph mx
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 26909
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1
;; QUESTION SECTION:
;alliance.com.ph. IN MX
;; ANSWER SECTION:
alliance.com.ph. 2274 IN MX 5 mail3.alliance.com.ph.
alliance.com.ph. 2274 IN MX 10 mail2.alliance.com.ph.
alliance.com.ph. 2274 IN MX 0 mail.alliance.com.ph.
;; ADDITIONAL SECTION:
mail.alliance.com.ph. 2312 IN A 203.177.158.147
That server when you telnet to port 25 says its a Lotus Notes server.