InformatiQ

Microsoft Exchange Hosted Services is a new service by Microsoft to provide email security services, in short it scans incoming and outgoing mails for SPAM, Virus and policy violations.
what i discovered is that their smtp service is running POSTFIX

rhanna@rhanna:~$ dig somedomain.com MX

; <<>> DiG 9.3.2 <<>> npcegypt.com MX
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 13422
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;somedomain.com. IN MX

;; ANSWER SECTION:
somedomain.com. 300 IN MX 10 mail.global.frontbridge.com.

where somedomain.com is a client of Microsoft Exchange Hosted Services

rhanna@rhanna:~$ dig mail.global.frontbridge.com.

; <<>> DiG 9.3.2 <<>> mail.global.frontbridge.com.
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 13120
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 6, ADDITIONAL: 3

;; QUESTION SECTION:
;mail.global.frontbridge.com. IN A

;; ANSWER SECTION:
mail.global.frontbridge.com. 10 IN A 62.209.45.169

now the suprise

rhanna@rhanna:~$ telnet 62.209.45.169 25
Trying 62.209.45.169...
Connected to 62.209.45.169.
Escape character is '^]'.
220 mail23-fra.bigfish.com ESMTP Postfix EGGS and Butter

Microsoft are using linux !!!! what happened to Exchange?