dns issue

  • Thread starter Thread starter mails
  • Start date Start date
M

mails

Hi All,

When i am trying to send the mail to one doamin i am getting the bouce back
meesage like "no reverse DNS entry found for your mail-server (RFC1912)"
But i can send the mail to all other domains.Even i am telnet to port 25,
still i am getting the above error.can anyone help me regardsing this.

Regards,
Johnson
 
Hello mails,

Just create a Reverse lookup zone on your DNS server. Exchange sometimes
need it. Should work then.

Best regards

Myweb
Disclaimer: This posting is provided "AS IS" with no warranties, and confers
no rights.
 
Hi,

I have already that entry.Now what is the problem is that, when i am putting
the ip address in the "Reverse DNS lookup
"in dnsstuff.com i am getting the error like "Answer:
164.164.**.** PTR record: mail.xxx.com. [TTL 86400s] [A=None] *ERROR* There
is no A record for mail.****.com. (may be negatively cached).
So where i need to create the "A" record ?

Regards,
Johnson
 
Hello mails,

Have you created a MX record in your Forward lookoupzone for the exchange
server?

Best regards

Myweb
Disclaimer: This posting is provided "AS IS" with no warranties, and confers
no rights.
Hi,

I have already that entry.Now what is the problem is that, when i am
putting
the ip address in the "Reverse DNS lookup
"in dnsstuff.com i am getting the error like "Answer:
164.164.**.** PTR record: mail.xxx.com. [TTL 86400s] [A=None] *ERROR*
There
is no A record for mail.****.com. (may be negatively cached).
So where i need to create the "A" record ?
Regards,
Johnson
Myweb said:
Hello mails,

Just create a Reverse lookup zone on your DNS server. Exchange
sometimes need it. Should work then.

Best regards

Myweb
Disclaimer: This posting is provided "AS IS" with no warranties, and confers

no rights.
Click to expand...
Click to expand...
 
Thanks for the reply.

Yes i have the MX record already.And we can able to send the mail to all
other domains except this domain(de.tuv.com)

Regards,
Johnson

Myweb said:
Hello mails,

Have you created a MX record in your Forward lookoupzone for the exchange
server?

Best regards

Myweb
Disclaimer: This posting is provided "AS IS" with no warranties, and confers
no rights.
Hi,

I have already that entry.Now what is the problem is that, when i am
putting
the ip address in the "Reverse DNS lookup
"in dnsstuff.com i am getting the error like "Answer:
164.164.**.** PTR record: mail.xxx.com. [TTL 86400s] [A=None] *ERROR*
There
is no A record for mail.****.com. (may be negatively cached).
So where i need to create the "A" record ?
Regards,
Johnson
Myweb said:
Hello mails,

Just create a Reverse lookup zone on your DNS server. Exchange
sometimes need it. Should work then.

Best regards

Myweb
Disclaimer: This posting is provided "AS IS" with no warranties, and confers

no rights.

Hi All,

When i am trying to send the mail to one doamin i am getting the
bouce back meesage like "no reverse DNS entry found for your
mail-server (RFC1912)" But i can send the mail to all other
domains.Even i am telnet to port 25, still i am getting the above
error.can anyone help me regardsing this.

Regards,
Johnson
Click to expand...
Click to expand...
Click to expand...
 
Read inline please.

In
mails said:
Thanks for the reply.

Yes i have the MX record already.And we can able to send the mail to
all other domains except this domain(de.tuv.com)
Click to expand...

Some mail servers are very picky on accepting email, if everything does
match up just right they won't and really as long as they are following
RFCs, don't have to accept email from SMTP server that do not follow each
and every RFC down to the last detail.

The point here, if you MX record says your mail server HELO name is
mail.xxx.com, and you don't have a PTR for the IP it connects from or an A
record for the exact HELO name, or if all of the above is not met, it is not
required to accept mail from you.


--
Best regards,
Kevin D. Goodknecht Sr. [MVP]
Hope This Helps
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