DNS OK, but Exchange Problem

3 replies [Last post]
Jack
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Joined: 01.05.2008

Using info from the subject "Service not Listening?", I was able to get my dns setup to where I get positive returns from dig and host.

TEST RESULTS WHEN RUN ON WINDOWS DNS SERVER

D:\Spamhaus>dig A 2.0.0.127.sbl.dnsbl

; <<>> DiG 9.3.2 <<>> A 2.0.0.127.sbl.dnsbl
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1562
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;2.0.0.127.sbl.dnsbl.           IN      A

;; ANSWER SECTION:
2.0.0.127.sbl.dnsbl.    300     IN      A       127.0.0.2

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Thu Nov 16 16:42:37 2006
;; MSG SIZE  rcvd: 53

D:\Spamhaus>host -t A 2.0.0.127.sbl.dnsbl
2.0.0.127.sbl.dnsbl has address 127.0.0.2

D:\Spamhaus>

I've setup the connection filter and smtp virtual server in Exchange, but

I still get negative results when I test email sent to nelson@....

I don't get positive dig and host returns when I run them from the exchange server which has wrbldsnsd running on it. The scheduled tasks sbl and xbl work fine.

Any ideas?

tk
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Joined: 01.05.2008

[quote="Jack"] I don't get positive dig and host returns when I run them from the exchange server which has wrbldsnsd running on it. The scheduled tasks sbl and xbl work fine.[/quote]

Then there is still a DNS problem. Your Exchange/Wrbldnsd server should be able to resolve queries like 2.0.0.127.sbl.dnsbl. You may check DNS server settings of that server.

Jack
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Joined: 01.05.2008

So you are saying that I should, in fact, have dns running on the exchange/wrbldnsd server machine as well as any other servers in the domain that are running dns? My understanding was that the wrbldnsd service can not co-exist on the same machine as a microsoft dns service. This exchange server is pointing to the dns server that had the correct dig/host returns for resolution. Please clarify.

Jack

tk
Offline
Joined: 01.05.2008

NO, I am not saying this! Your Exchange/Wrbldnsd server uses a DNS server to resolve names. I suggest to check which DNS server is used for that purpose (IP settings!). If you run dig/host tests on your Exchange/wrbldnsd server, that DNS server will be contacted for name resolution.