[ExchangeList] Re: Reverse Lookup

  • From: abrar ahmed papa <maap3@xxxxxxxxx>
  • To: exchangelist@xxxxxxxxxxxxx
  • Date: Wed, 17 May 2006 07:42:08 +0100 (BST)

Hi,
 
Blocking incoming mail without a valid PTR record is possible using exchange.
Blocking outgoing mail without a valid PTR record is not possible using exchange.
 
Regards


"John T (Lists)" <johnlist@xxxxxxxxxxxxxxxxxxx> wrote:
http://www.msexchange.org
-------------------------------------------------------Andrew, you are mixing things up again.

Doing a PTR lookup on the connecting server on an incoming message is a
valid test as part of an anti-spam effort.

Doing a PTR lookup on the receiving server on an outgoing message is
worthless as part of an anti-spam effort to keep spam from coming in.

John T
eServices For You

"Seek, and ye shall find!"

> -----Original Message-----
> From: exchangelist-bounce@xxxxxxxxxxxxx
[mailto:exchangelist-bounce@xxxxxxxxxxxxx]
> On Behalf Of Andrew English
> Sent: Tuesday, May 16, 2006 6:46 PM
> To: exchangelist@xxxxxxxxxxxxx
> Subject: [ExchangeList] Re: Reverse Lookup
>
> http://www.msexchange.org
> -------------------------------------------------------I don't know what
with your emails
> John but they all start after the
> ---- line as suppose to under it. Anyhow regarding ethics tell that to
> the hordes of companies that only accept and send email if they can
> reverse look up your IP.
>
> Andrew :)
>
> -----Original Message-----
> From: exchangelist-bounce@xxxxxxxxxxxxx
> [mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of John T (Lists)
> Sent: Tuesday, May 16, 2006 7:16 PM
> To: exchangelist@xxxxxxxxxxxxx
> Subject: [ExchangeList] Re: Reverse Lookup
>
> http://www.msexchange.org
> -------------------------------------------------------So if the
> recipient e-mail server does not have a valid PRT record, you do
> not want to deliver the message but delete it? Other than the fact there
> is
> no valid reason for do that, it would break ethics if not laws.
>
> John T
> eServices For You
>
> "Seek, and ye shall find!"
>
> > -----Original Message-----
> > From: exchangelist-bounce@xxxxxxxxxxxxx
> [mailto:exchangelist-bounce@xxxxxxxxxxxxx]
> > On Behalf Of Andrew English
> > Sent: Tuesday, May 16, 2006 3:52 PM
> > To: exchangelist@xxxxxxxxxxxxx
> > Subject: [ExchangeList] Re: Reverse Lookup
> >
> > http://www.msexchange.org
> > -------------------------------------------------------
> > How do I get Exchange to do a reverse lookup of the IP address it's
> > sending an email to before sending it to check if it's valid or not,
> and
> > if it's not valid to drop the email all together?
> >
> > Thanks
> > Andrew
> >
> > -------------------------------------------------------
> > List Archives: http://www.freelists.org/archives/exchangelist/
> > MSExchange Newsletter: http://www.msexchange.org/pages/newsletter.asp
> > MSExchange Articles and Tutorials:
> http://www.msexchange.org/articles_tutorials/
> > MSExchange Blogs: http://blogs.msexchange.org/
> > -------------------------------------------------------
> > Visit TechGenix.com for more information about our other sites:
> > http://www.techgenix.com
> > -------------------------------------------------------
> > To unsubscribe visit http://www.msexchange.org/pages/exchangelist.asp
> > Report abuse to listadmin@xxxxxxxxxxxxxx
>
>
> -------------------------------------------------------
> List Archives: http://www.freelists.org/archives/exchangelist/
> MSExchange Newsletter: http://www.msexchange.org/pages/newsletter.asp
> MSExchange Articles and Tutorials:
> http://www.msexchange.org/articles_tutorials/
> MSExchange Blogs: http://blogs.msexchange.org/
> -------------------------------------------------------
> Visit TechGenix.com for more information about our other sites:
> http://www.techgenix.com
> -------------------------------------------------------
> To unsubscribe visit http://www.msexchange.org/pages/exchangelist.asp
> Report abuse to listadmin@xxxxxxxxxxxxxx
>
> -------------------------------------------------------
> List Archives: http://www.freelists.org/archives/exchangelist/
> MSExchange Newsletter: http://www.msexchange.org/pages/newsletter.asp
> MSExchange Articles and Tutorials:
http://www.msexchange.org/articles_tutorials/
> MSExchange Blogs: http://blogs.msexchange.org/
> -------------------------------------------------------
> Visit TechGenix.com for more information about our other sites:
> http://www.techgenix.com
> -------------------------------------------------------
> To unsubscribe visit http://www.msexchange.org/pages/exchangelist.asp
> Report abuse to listadmin@xxxxxxxxxxxxxx


-------------------------------------------------------
List Archives: http://www.freelists.org/archives/exchangelist/
MSExchange Newsletter: http://www.msexchange.org/pages/newsletter.asp
MSExchange Articles and Tutorials: http://www.msexchange.org/articles_tutorials/
MSExchange Blogs: http://blogs.msexchange.org/
-------------------------------------------------------
Visit TechGenix.com for more information about our other sites:
http://www.techgenix.com
-------------------------------------------------------
To unsubscribe visit http://www.msexchange.org/pages/exchangelist.asp
Report abuse to listadmin@xxxxxxxxxxxxxx



Why was V. Sehwag warned by the BCCI? Share your knowledge on Yahoo! Answers India
Send instant messages to your online friends - NOW

Other related posts: