Re: Unable to receive e-mail messages from certain sites with reve

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Thanks for the reply. I have verified that Symantec is NOT blocking ANY
spam. Is there a way to have exchange log the messages that are trashed
because of a failed reverse DNS lookup. I don't want to disable the reverse
DNS lookup because I will be buried with questions from users saying "Why did
I get all of these spam messages?" even if I send them all an e-mail
indicating the test procedures being used.

Simply put:

Symantec is NOT blocking ANY spam.

Is there a way to have Exchange log the messages that are being trashed due
to failed reverse DNS lookup?

Thanks in advance,
Allen

--
It sure would be nice if Microsoft had some sort of QA procedure on their
white papers and KB articles!


"John Oliver, Jr. [MVP]" wrote:

> I have you tried just disabling temporarily the Reverse DNS setting to see
> if the mail gets through? Also check your settings on the Symantec Mail
> Security as it maybe catching that mail as spam.
>
> --
> John Oliver, Jr.
> MCSE, MCT, CCNA, Exchange MVP
> Microsoft Certified Partner
>
> "Allen Clark" <nospamacent1@xxxxxxxxxxxxxxxx> wrote in message
> news:6E574CE7-1007-4CB9-B55C-1357A547A8F4@xxxxxxxxxxxxxxxx
> > We have a simple Exchange 2000 configuration. One Exchange server 2000
> > running on a single Windows 2000 server. DSL connection with static IP
> > address, host, mx, and reverse DNS all properly configured. Firewall
> > device
> > that routes all SMTP traffic to the Exchange server from our public IP
> > address. In order to cut down on the amount of SPAM received, we have
> > enabled the reverse DNS checking to validate e-mail messages coming into
> > our
> > server. We also run the Symantec Enterprise Edition 10.0 AV which
> > includes
> > the Symantec Mail Security for Exchange. The problem we are experiencing
> > is
> > that a few senders are unable to send to our server from other sites. Our
> > bank, ChevyChaseBank, and Pepco, both have individuals that have tried to
> > send e-mail to us, but they never get thru. We can send to them without a
> > problem, but they cannot reply or send to us. I have checked the SMS4E
> > logs
> > and have nothing enabled for antispam, only AV protection. The only
> > protection we have for spam is the server setting to check reverse DNS.
> > How
> > can I go about troubleshooting this message. I had read that when a
> > message
> > fails reverse DNS lookup, it is deleted and there is nothing logged. Is
> > this
> > true? If not, where can I see what messages are being deleted due to the
> > reverse DNS resolution failure?
> >
> > Thanks,
> > Allen
> >
> > --
> > It sure would be nice if Microsoft had some sort of QA procedure on their
> > white papers and KB articles!
>
>
>
.

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