emai dns records

  • Thread starter Thread starter paul.taylor
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paul.taylor

I have a Active Directory internal dns server with external forwarders
enabled. I also use a netscreen firewall and I am trying to block all
unwanted email address at the firewall. The netscreen tech support said I
could create a group to pass only email address that my internal dns server
would resolve. How do I create records on my dns server that will resolve an
email address.
 
In
paul.taylor said:
I have a Active Directory internal dns server with external forwarders
enabled. I also use a netscreen firewall and I am trying to block all
unwanted email address at the firewall. The netscreen tech support
said I could create a group to pass only email address that my
internal dns server would resolve. How do I create records on my dns
server that will resolve an email address.
Click to expand...
It is not DNS's responsibility to resolve email addresses, DNS can only give
the mail server records for the requested email domain. It is up to the mail
server to accept or reject mail to or from certain users or domains.
 
In
Kevin D. Goodknecht said:
In
It is not DNS's responsibility to resolve email addresses, DNS can
only give the mail server records for the requested email domain. It
is up to the mail server to accept or reject mail to or from certain
users or domains.


--
Best regards,
Kevin D4 Dad Goodknecht Sr. [MVP]
Hope This Helps
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Click to expand...

Or better yet, a 3rd party tool, such as MailMarshall, or Trend, there are
many of them out there that work very well...

--
Regards,
Ace

Please direct all replies to the newsgroup so all can benefit.
This posting is provided "AS IS" with no warranties.

Ace Fekay, MCSE 2000, MCSE+I, MCSA, MCT, MVP
Microsoft Windows MVP - Active Directory
 
we use Trend Micro Virus scan with great success but the version does not
support mai address filtering
"Ace Fekay [MVP]"
 
DNS doesn't resolve e-mail addresses.... What mail system are you using?
 
In
paul.taylor said:
we use Trend Micro Virus scan with great success but the version does
not support mai address filtering
Click to expand...

I guess your best bet is to create the zones for domains you don't want to
send mail to, create an MX and A record giving it a bogus IP. But this is
for sending, not receiving mail. To block certain incoming domains, and if
Trend doesn't give the ability to subscribe to the RBL, then you can
probably go with one of those services. Here's a link on it:

Open Relay Database - Welcome to the ORDB.org - the Open Relay DataBase.:
http://www.ordb.org/.


Spam Assasin is a good one to consider:
news.spamassassin.org Reliable SPAM identification using Perl:
http://news.spamassassin.org/

MAPS RBL Usage:
http://mail-abuse.org/rbl/usage.html

--
Regards,
Ace

Please direct all replies to the newsgroup so all can benefit.
This posting is provided "AS IS" with no warranties.

Ace Fekay, MCSE 2000, MCSE+I, MCSA, MCT, MVP
Microsoft Windows MVP - Active Directory
 
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