Manual Reverse DNS test

  • Thread starter Thread starter Levi
  • Start date Start date
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Levi

Is there a way to do a command-line (NSLOOKUP?) reverse
DNS lookup to see what response my DNS server is giving?
I'm trying to troubleshoot an email problem where my email
antivirus server's IP address (which has a proper Host AND
MX record, as well as the reverse-dns pointer record.
However, every time my email server tries to perform a
reverse DNS lookup on my email antivirus server, it fails.
 
In
Levi said:
Is there a way to do a command-line (NSLOOKUP?) reverse
DNS lookup to see what response my DNS server is giving?
I'm trying to troubleshoot an email problem where my email
antivirus server's IP address (which has a proper Host AND
MX record, as well as the reverse-dns pointer record.
However, every time my email server tries to perform a
reverse DNS lookup on my email antivirus server, it fails.
Click to expand...

nslookup
set type=ptr

I don't know what mail server you are using but most can be set to accept
mail from trusted mail servers without performing a reverse lookup on its
IP. This is recommended to keep it from continually having to perform
lookups on its gateway mailserver. This is highly unnecessary.
 
Ok, I did this through NSLOOKUP and it returned this:
tachc.org
primary name server = ns10
responsible mail addr = admin
serial = 46
refresh = 900 (15 mins)
retry = 600 (10 mins)
expire = 86400 (1 day)
default TTL = 3600 (1 hour)
Is this all that should be included in this reply?
Thanks
 
In
Levi said:
Ok, I did this through NSLOOKUP and it returned this:
tachc.org
primary name server = ns10
responsible mail addr = admin
serial = 46
refresh = 900 (15 mins)
retry = 600 (10 mins)
expire = 86400 (1 day)
default TTL = 3600 (1 hour)
Is this all that should be included in this reply?
Thanks
Click to expand...
It is when you do a lookup for a PTR record when you put in a name.
Try putting in an IP address:-)
 
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