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

The only place I would think these messages would show up is in the Bad Mail
Folder, have you checked it?

--
John Oliver, Jr.
MCSE, MCT, CCNA, Exchange MVP
Microsoft Certified Partner

"Allen Clark" <nospamacent1@xxxxxxxxxxxxxxxx> wrote in message
news:E490F23C-7E59-4262-B3CC-20A449176853@xxxxxxxxxxxxxxxx
> 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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