RE: Port 135

  • From: "Periyasamy, Raj" <Raj.Periyasamy@xxxxxxxxxxxx>
  • To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx>
  • Date: Fri, 3 Oct 2003 15:14:31 -0400

You don't need RPC for DNS look up and name resolution. Are you able to do a 
nslookup and lookup for the failing domain name MX records ? 

-----Original Message-----
From: Richard Spencer [mailto:rspencer@xxxxxxxxxxx] 
Sent: Friday, October 03, 2003 3:05 PM
To: [ExchangeList]
Subject: [exchangelist] Port 135

I am having a problem where email to certain domains is failing with the error 
"Domain does not exist".  Now, we are able to send this mail from an outside 
source, i.e. hotmail, with no problem.  In my firewall, there is an error about 
packets getting dropped that coincide with the email errors.  The Firewall is 
reporting "Packets dropped: RPC Mapper".  So, what's the deal?  Do I need to 
have Port 135 open through my firewall for the RPC? Any ideas?
Richard Spencer
Internet Production Manger
Network Administrator
RGC Communications
630.307.8811 x118
List Archives:
Exchange Newsletters:
Exchange FAQ:
Other Internet Software Marketing Sites:
Leading Network Software Directory:
No.1 ISA Server Resource Site:
Windows Security Resource Site:
Network Security Library:
Windows 2000/NT Fax Solutions:
You are currently subscribed to this Discussion List as: 
To unsubscribe send a blank email to $subst('Email.Unsub') 

Other related posts: