DNS Lookup failure

Issues related to Quick 'n Easy Mail Server.
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max7
Posts: 18
Joined: Wed Apr 16, 2008 6:38 pm
Location: USA

DNS Lookup failure

Post by max7 » Mon Jun 02, 2008 8:47 pm

Hello -

Below are logs from the mail server and I don't know what it means and how to resolve it. The end result of all this is my emails aren't going out. The performance with QnE Mail server has been spotty even though I believe I'm providing all necessary information for it to work properly. Please let me know the nature of this problem and what I need to do to resolve it, Thanks.

10:27:31.540 [1500] <POP3> Server started on port 110.
10:27:31.540 [1500] <SMTP> Server started on port 25.
10:27:31.540 [1500] <RELAY> Relaying thread started.
10:31:28.353 [2956] <SMTP> Client connected from 127.0.0.1
10:31:28.353 [2956] <SMTP> 220 Quick 'n Easy Mail Server
10:31:28.353 [2956] <SMTP> HELO max-023fe7af57c
10:31:28.353 [2956] <SMTP> 250 OK
10:31:28.353 [2956] <SMTP> MAIL FROM: <myemail1@gmail.com>
10:31:28.353 [2956] <SMTP> 250 OK
10:31:28.353 [2956] <SMTP> RCPT TO: <myemail2@gmail.com>
10:31:28.353 [2956] <SMTP> Forwarding email to: <myemail2@gmail.com>
10:31:28.353 [2956] <SMTP> 250 OK
10:31:28.353 [2956] <SMTP> RCPT TO: <myemail1@gmail.com>
10:31:28.353 [2956] <SMTP> Forwarding email to: <myemail1@gmail.com>
10:31:28.353 [2956] <SMTP> 250 OK
10:31:28.353 [2956] <SMTP> RCPT TO: <myemail@max.com>
10:31:28.353 [2956] <SMTP> Forwarding email to: <myemail@max.com>
10:31:28.353 [2956] <SMTP> 250 OK
10:31:28.353 [2956] <SMTP> DATA
10:31:28.353 [2956] <SMTP> 354 End with <CRLF>.<CRLF>
10:31:28.353 [1500] <SMTP> Incoming message: 149CB23BC5254AAFBB335F23C863E94B.eml
10:31:28.353 [1500] <SMTP> Copying message to: G:\Documents and Settings\Moshe\My Documents\mailboxes\queue\
10:31:28.368 [2956] <SMTP> 250 OK: Queued as: 149CB23BC5254AAFBB335F23C863E94B
10:31:28.368 [2956] <SMTP> QUIT
10:31:28.368 [2956] <SMTP> 221 Bye
10:31:28.368 [2956] <SMTP> Client disconnected from 127.0.0.1
10:31:28.368 [2292] <RELAY> Detected new messages in queue.
10:31:28.368 [2292] <RELAY> Checking file: 149CB23BC5254AAFBB335F23C863E94B.eml
10:31:29.462 [2292] <RELAY> DNS Lookup for 'gmail.com' failed!
10:31:29.462 [2292] <RELAY> Copying message to: G:\Documents and Settings\Moshe\My Documents\mailboxes\badmail\
10:31:29.571 [2292] <RELAY> DNS Lookup for 'gmail.com' failed!
10:31:29.571 [2292] <RELAY> Copying message to: G:\Documents and Settings\Moshe\My Documents\mailboxes\badmail\
10:31:29.681 [2292] <RELAY> DNS Lookup for 'max.com' failed!
10:31:29.681 [2292] <RELAY> Copying message to: G:\Documents and Settings\Moshe\My Documents\mailboxes\badmail\
10:31:29.681 [2292] <RELAY> Finished delivery of mail.
admin
Site Admin
Posts: 1470
Joined: Wed Apr 13, 2005 9:16 pm

Post by admin » Wed Jun 04, 2008 4:11 pm

Did you provide a valid DNS server?
What happens when you click the 'Test DNS' button?
max7
Posts: 18
Joined: Wed Apr 16, 2008 6:38 pm
Location: USA

Post by max7 » Wed Jun 04, 2008 8:43 pm

Yes, my DNS Server is valid based on the fact that I got it from my ISP and sending outgoing mail has actually worked in the past. Actually, the next day, I was able to run the script and send out the emails using all the same email addresses at gmail.com. I'm not sure what to make of it. :?

The test DNS button is odd to me: I have tried in a number of times and the reaction is always the same: I enter an email address, click ok and nothing happens. I check the mail server logs and I see nothing, not even an error message. Again, this is anytime I've tried using this feature and not just in conjunction with this particular problem. What should happen when using the Test DNS?
admin
Site Admin
Posts: 1470
Joined: Wed Apr 13, 2005 9:16 pm

Post by admin » Wed Jun 04, 2008 9:02 pm

If you enter a valid email address like 'myemail1@gmail.com' then the Test DNS will return all mail servers for that domain. If you do not get any results then the DNS might be invalid.
You can try to use a public DNS server instead (search for 'public DNS servers' on Google)
max7
Posts: 18
Joined: Wed Apr 16, 2008 6:38 pm
Location: USA

Post by max7 » Wed Jun 04, 2008 9:23 pm

If you enter a valid email address like 'myemail1@gmail.com' then the Test DNS will return all mail servers for that domain.
Where does the Test DNS present the results? Mail server logs or elsewhere? Once I get this information, do I input some of it in the mail server configuration somewhere or is it just a test to see if my DNS server is working and whether or not the email I've selected will receive what I'm sending out?
If you do not get any results then the DNS might be invalid.
Certainly I must consider this possibility but if the DNS I have isn't valid, how would it then send out the emails the next day upon testing the script again?7
admin
Site Admin
Posts: 1470
Joined: Wed Apr 13, 2005 9:16 pm

Post by admin » Thu Jun 05, 2008 4:57 pm

The result will be displayed in a popup window.

If the DNS works only sometimes, then there might be something wrong with the connection, please make sure you use a reliable DNS server. It should always present results for the previous example.

The software has been proven to be very stable, so I do not think this random behavior is caused by QnE Mail Server. The exectable works the same way each time you try it, if you know what I mean :?
max7
Posts: 18
Joined: Wed Apr 16, 2008 6:38 pm
Location: USA

Post by max7 » Sun Jun 08, 2008 12:22 am

today I used the test DNS feature for gmail and it worked but only once. I tested other emails (e.g. hotmail.com) and received no response, not even an error message. I decided to restart the mail server and when I did this, I could use the the Test DNS feature again for hotmail.com but as in my first attempt, when I used this feature to test another email (right after testing the hotmail, no restart) I received no response.

Is this normal behavior for this feature i.e. one Test DNS per startup?

Also, if there was a problem (be it from my DNS server or otherwise), shouldn't the Test DNS return some sort of error message to let me know?
admin
Site Admin
Posts: 1470
Joined: Wed Apr 13, 2005 9:16 pm

Post by admin » Sun Jun 08, 2008 8:02 am

There will be no error messages if the text DNS option does not work.
The messagebox will display the extact response from the DNS server. If there is no response there will be nothing to display.

The Test DNS option should work everytime you try it, no expections!
Maybe your firewall/virusscanner blocks the results?

Did you try it on another computer?
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