Exchange 2010 ports

Network/Firewall Ports that need to be opened when implementing Exchange 2010.

I also highly recommend referring to this article by Michel de Rooij, he has the best visual diagram of how the ports work within the exchange infrastructure.
Click here for his exchange network diagram.

Role	Port	To
MBX	3343	MBX
MBX	64327	MBX
MBX	135	to HUB
MBX	135	to CAS
MBX	135	to DC, GC, DNS
MBX	53	to DC, GC, DNS
MBX	88	to DC, GC, DNS
MBX	3268	to DC, GC, DNS
MBX	389	to DC, GC, DNS
CAS	80	CAS
CAS	995	CAS
CAS	993	CAS
CAS	80	internet
CAS	110	internet
CAS	143	internet
CAS	135	to DC, GC, DNS
CAS	53	to DC, GC, DNS
CAS	88	to DC, GC, DNS
CAS	3268	to DC, GC, DNS
CAS	389	to DC, GC, DNS
CAS	5075-5077	UM
CAS	5060-5062	UM
HUB	25	to Hub
HUB	135	to MBX
HUB	135	to DC, GC, DNS
HUB	53	to DC, GC, DNS
HUB	88	to DC, GC, DNS
HUB	3268	to DC, GC, DNS
HUB	389	to DC, GC, DNS
HUB	25	to EDGE
HUB	50636	to EDGE
EDGE	25	to EDGE
EDGE	25	internet
EDGE	587	internet
UM (Lync)	25	to HUB
UM (Lync)	5075-5077	to CAS
UM (Lync)	5060-5062	to CAS
UM (Lync)	135	to DC, GC, DNS
UM (Lync)	53	to DC, GC, DNS
UM (Lync)	88	to DC, GC, DNS
UM (Lync)	3268	to DC, GC, DNS
UM (Lync)	389	to DC, GC, DNS