Helo,
Did you try to manually simulate the SMTP dialog? The part after HELO/EHLO
is important for RDNS. I have the oposite experience: On the SMTP Service I
enabled reverse DNS lookup but the service doesn't mark any messege as "RDNS
lookup failed" I tried manually emulated messages, messages from Outlook
express with wrong domain information, real Internet spams ... The SMTP
service NEVER found an RDNS problem. I couldn't find such problem anywhere
....
[quoted text, click to view] C Baker wrote:
> I've setup IIS SMTP Service with Reverse DNS lookup enabled.
>
> In the headers of email however, it says the RDNS has failed. However, when
> I use nslookup on the ip address it resolves fine??
>
> Any ideas appreciated.
>
> CB
>
>
On Wed, 15 Jun 2005 01:00:04 -0700, "Phladky"
[quoted text, click to view] <Phladky@discussions.microsoft.com> wrote:
>I found the same problem. Mails sent from domains with correct RDNS are
>declared as "RDNS failed". It seems the SMTP service doesn't work correctly.
>Does anybody know how to solve this problem? Perhaps some patch from
>Microsoft should solve the problem - but I didn't find any hint in the MS
>KnowledgeBase.
Can SMTP resolve the correct reverse DNS at the time the email is
received? The best recomendation is not to use RDNS.
Jeff
[quoted text, click to view] >Pavel
>
>
>"C Baker" wrote:
>
>> I've setup IIS SMTP Service with Reverse DNS lookup enabled.
>>
>> In the headers of email however, it says the RDNS has failed. However, when
>> I use nslookup on the ip address it resolves fine??
>>
>> Any ideas appreciated.
>>
>> CB
>>
>>
>>
I found the same problem. Mails sent from domains with correct RDNS are
declared as "RDNS failed". It seems the SMTP service doesn't work correctly.
Does anybody know how to solve this problem? Perhaps some patch from
Microsoft should solve the problem - but I didn't find any hint in the MS
KnowledgeBase.
Pavel
[quoted text, click to view] "C Baker" wrote:
> I've setup IIS SMTP Service with Reverse DNS lookup enabled.
>
> In the headers of email however, it says the RDNS has failed. However, when
> I use nslookup on the ip address it resolves fine??
>
> Any ideas appreciated.
>
> CB
>
>
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