RE: BLOCKING SPOOFED INTERNAL EMAIL--FOLLOW UP!

2009-08-21 Thread Carl Houseman
Friday, August 21, 2009 10:26 AM To: MS-Exchange Admin Issues Subject: Re: BLOCKING SPOOFED INTERNAL EMAIL--FOLLOW UP! On Thu, Aug 20, 2009 at 4:57 PM, Murray Freeman wrote: > If we use the *...@alant.org in the SPF, we then create a problem with legitimate > email coming from an external mail se

Re: BLOCKING SPOOFED INTERNAL EMAIL--FOLLOW UP!

2009-08-21 Thread Ben Scott
On Thu, Aug 20, 2009 at 4:57 PM, Murray Freeman wrote: > If we use the *...@alant.org in the SPF, we then create a problem with > legitimate > email coming from an external mail server, our website which is hosted by a > third party. As ME2 says, you should add your web server's IP address to t

RE: BLOCKING SPOOFED INTERNAL EMAIL--FOLLOW UP!

2009-08-20 Thread Carl Houseman
rnate mail address to the required users so the external messages are reply-able. Carl From: Murray Freeman [mailto:mfree...@alanet.org] Sent: Thursday, August 20, 2009 4:58 PM To: MS-Exchange Admin Issues Subject: BLOCKING SPOOFED INTERNAL EMAIL--FOLLOW UP! I really appreciate the respo

Re: BLOCKING SPOOFED INTERNAL EMAIL--FOLLOW UP!

2009-08-20 Thread Micheal Espinola Jr
You can use the "include" option if you can do it based on sender domain name, or use the "ip4" option to specify specific valid sending IP4 addresses. e.g. You can easily just add 'include:constantcontact.com" if you need to allow ConstantContact to send emails on your behalf, and you trust that

BLOCKING SPOOFED INTERNAL EMAIL--FOLLOW UP!

2009-08-20 Thread Murray Freeman
I really appreciate the responses to my request for help blocking spoofed Internal email. I did some research and found that Exchange Server 2K3 has some potential to assist with this issue, but there is one problem. If we use the *...@alant.org in the SPF, we then create a problem with legitimate