none
lot of email on Queue

    Question

  • Hi ,

    could you please let me know how we can over come DNS Connector Delivery queue .


    Continuous plan Do review is key to success.
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    Monday, June 13, 2016 6:57 PM

Answers

All replies

  • Hi there,

    what's there to overcome? Most of those are non-existing domains (at least not resolvable from where I am now) so you can't deliver to those using DNS.

    Some ARE resolvable, e.g. intelligencestuff.com Can you resolve its MX record from your Exchange server:

    c:\users\you> nslookup
    > set type=mx
    > intelligencestuff.com
    
    

    ?


    Evgenij Smirnov

    msg services ag, Berlin -> http://www.msg-services.de
    my personal blog (mostly German) -> http://it-pro-berlin.de
    Windows Server User Group, Berlin -> http://www.winsvr-berlin.de
    Mark Minasi Technical Forum, reloaded -> http://newforum.minasi.com

    In theory, there is no difference between theory and practice. In practice, there is.

    Monday, June 13, 2016 8:28 PM
  • Hi ,

    Thanks for response , I can understand these are non existence domain , but those emails are keep trying so we have suspended .

    it reduce server performance and other email flow .


    Continuous plan Do review is key to success.
    Please mark as answer \Helpful if its . My Linkedin Profile

    Monday, June 13, 2016 9:22 PM
  • The question you should be asking yourself is where those mails are coming from in the first place. If a legitimate sender submits an email, Exchange will try to deliver it. If the first attempt is unsuccessful, it will defer delivery and try again in a couple of minutes, then in a couple of hours, and after four days it will give up. You can adjust this behaviour but it may affect legit mail as well.


    Evgenij Smirnov

    msg services ag, Berlin -> http://www.msg-services.de
    my personal blog (mostly German) -> http://it-pro-berlin.de
    Windows Server User Group, Berlin -> http://www.winsvr-berlin.de
    Mark Minasi Technical Forum, reloaded -> http://newforum.minasi.com

    In theory, there is no difference between theory and practice. In practice, there is.

    Monday, June 13, 2016 9:40 PM
  • Hi,

    Do you send mail through a third-party SPAM filter?

    Please try to resume the queue to change the status from "suspended" to "active", then restart the exchange transport service to test.

    Also enable verbose logging on the send connector.

    In addition,I have found a similar thread for your reference:

    https://social.technet.microsoft.com/Forums/en-US/7e96ea36-89fc-4a93-97e2-c79dd30738b0/lots-of-dnsconnectordeliverys-in-the-queue-viewer?forum=exchangesvrsecuremessaginglegacy

    Regards,

    David


    • Marked as answer by satya11 Tuesday, June 14, 2016 7:34 PM
    Tuesday, June 14, 2016 3:08 AM
    Moderator
  • Hi David thanks for URL unfortunately that couldn't help.Is there any other way .

    We can see lot of email in queue like

    Identity: Mail server name \Shadow\330242\78129750081565
    Subject: How--To-Read-&--Watch--Your Tablet --Hands Free
    Internet Message ID: <xxxxxx@t2ybou19.aenan.in.net>
    From Address: TabletInventions@aenan.in.net
    Status: Ready
    Size (KB): 8
    Message Source Name: SMTP:Default mail server name
    Source IP: mail server lan ip
    SCL: 6
    Date Received: 6/15/2016 11:11:23 AM
    Expiration Time: 6/17/2016 11:11:23 AM
    Last Error:
    Queue ID: mail serve name \Shadow\330242
    Recipients:  neil.cohen@our accepted domain but not valid recipient .com;2;0;[{LRT=};{LED=};{FQDN=};{IP=}];0;;0


    Continuous plan Do review is key to success.
    Please mark as answer \Helpful if its . My Linkedin Profile

    Wednesday, June 15, 2016 7:55 PM