Emails Stopped

• r

  richard

  2/23/25, 3:45 PM

  Hi

   

  V20.0.8 

  Been away, and our emails stopped think its DNS related due to the SMTP out but need a pointer as i have now tried all suggestions google gives me.

  Its been an aclumlation of things first not being able to send to gmail/google accounts and now all outgoing emails end up in the retry queue

  Sun 2025-02-23 21:35:43.822: REMOTE message: pd3501000008705.msg
  Sun 2025-02-23 21:35:43.822: *  Session 02123467; child 0001
  Sun 2025-02-23 21:35:43.823: *  From: ****************
  Sun 2025-02-23 21:35:43.823: *  To: *************@gmail.com
  Sun 2025-02-23 21:35:43.823: *  Subject: Test 3 
  Sun 2025-02-23 21:35:43.823: *  Message-ID: <ED8799CB-ABF2-40C2-8334-B3C960B0E12E@*************>
  Sun 2025-02-23 21:35:43.823: *  Size: 1761; <c:\mdaemon\queues\remote\pd3501000008705.msg>
  Sun 2025-02-23 21:35:43.906: Resolving MX record for gmail.com (DNS Server: 1.1.1.1)...
  Sun 2025-02-23 21:35:53.287: *  DNS: 10 second wait for DNS response exceeded (DNS Server: 1.1.1.1)
  Sun 2025-02-23 21:35:53.287: Resolving MX record for gmail.com (DNS Server: 8.8.8.8)...
  Sun 2025-02-23 21:36:03.293: *  DNS: 10 second wait for DNS response exceeded (DNS Server: 8.8.8.8)
  Sun 2025-02-23 21:36:03.293: Resolving MX record for gmail.com (DNS Server: 192.168.2.1)...
  Sun 2025-02-23 21:36:13.298: *  DNS: 10 second wait for DNS response exceeded (DNS Server: 192.168.2.1)
  Sun 2025-02-23 21:36:13.298: Attempting SMTP connection to gmail.com
  Sun 2025-02-23 21:36:13.299: Resolving A record for gmail.com (DNS Server: 1.1.1.1)...
  Sun 2025-02-23 21:36:23.307: *  DNS: 10 second wait for DNS response exceeded (DNS Server: 1.1.1.1)
  Sun 2025-02-23 21:36:23.307: Attempting SMTP connection to gmail.com
  Sun 2025-02-23 21:36:23.308: Resolving A record for gmail.com (DNS Server: 8.8.8.8)...
  Sun 2025-02-23 21:36:33.314: *  DNS: 10 second wait for DNS response exceeded (DNS Server: 8.8.8.8)
  Sun 2025-02-23 21:36:33.314: Attempting SMTP connection to gmail.com
  Sun 2025-02-23 21:36:33.315: Resolving A record for gmail.com (DNS Server: 192.168.2.1)...
  Sun 2025-02-23 21:36:43.349: *  DNS: 10 second wait for DNS response exceeded (DNS Server: 192.168.2.1)
  Sun 2025-02-23 21:36:43.350: *  This message is 28 minutes old; it has 32 minutes left in this queue
  Sun 2025-02-23 21:36:43.350: SMTP session terminated (Bytes in/out: 0/0)
  Sun 2025-02-23 21:36:43.350: ----------

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• A

  Arron Admin Staff

  2/24/25, 7:12 AM

  The log shows the MDaemon is not able to resolve MX or A records.  You can try increasing the timeouts (Setup | Server Settings | Servers & Delivery | Timeouts), but I won't be shocked if you report that doesn't fix it.  

  Do you have a DNS server on your network?  If you do, what could be preventing MDaemon from connecting to it (Firewall, Proxy, etc).  Does that device show the connection? 

  Is the windows firewall enabled on the MDaemon server?  Is it blocking the DNS lookups?

  DNS uses port UDP and TCP port 53.  Have you changed the port that MDaemon is trying to use? (Setup | Server Settings | DNS & IPs | Ports)

   

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  Arron Caruth

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• r

  richard

  2/26/25, 5:42 AM

  Arron, thanks for the reply strange thing as it started working again on its own. Will have a look at our firewall logs and see if anything got blocked which is possible as it is blocking a lot of things daily and a lot of user trying to access the VPN on it which is turned off. Possibly due to the increase in traffic the firewall might have blocked everything might look at getting it upgraded.

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