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  • 1.  no MXs for this domain could be reached at this time, instead of undeliverable?

    Posted Nov 12, 2009 04:53 PM
    I had a user send emails to two bad email addresses.

    He received delay messages for days after it.  (he didnt report it to me until day 4)

    421 4.4.0 [internal] no MXs for this domain could be reached at this time

    When I did a lookup for the domains, they were non-exsistant. 
    So why didnt BrightMail just send an undeliverable back to him, instaed of retrying for several days?


  • 2.  RE: no MXs for this domain could be reached at this time, instead of undeliverable?

    Posted Nov 12, 2009 05:38 PM
    A 400 series error is not permanent / fatal error. So it will keep trying until the time out period has been reached. If a 500 series error was returned that would send a bounce/undeliverable back.

    I only glanced at it but it doesnt appear RFC2821 specifys that a DNS failure as a fatal error. Also if a MX record or domain shows up for the domain in the devlivery retry window it would get delivered.





  • 3.  RE: no MXs for this domain could be reached at this time, instead of undeliverable?

    Broadcom Employee
    Posted Nov 12, 2009 07:10 PM
    Here is the knowledgebase document we have on this:


    Title: 'Queue Message: 421 4.4.0 [internal] "no MXs for this domain could be reached at this time."'
    Document ID: 2009032512563954
    > Web URL: http://service1.symantec.com/SUPPORT/ent-gate.nsf/docid/2009032512563954?Open&seg=ent



  • 4.  RE: no MXs for this domain could be reached at this time, instead of undeliverable?
    Best Answer

    Posted Nov 13, 2009 10:46 AM
    configured on the Scanner's Advance tab.  Just because there isn't an MX now, doesn't mean that within the delivery retry time one won't appear, or that an A-Record won't become available.  Change your delivery retry max if you want SBG to give it up sooner.


  • 5.  RE: no MXs for this domain could be reached at this time, instead of undeliverable?

    Posted Nov 17, 2009 08:48 PM
    May I know where is the Scanner's Advance tab location?


  • 6.  RE: no MXs for this domain could be reached at this time, instead of undeliverable?

    Posted Nov 18, 2009 03:09 AM
    Hi,

    the Advanced SMTP settings on the GUI are under Administration -> Hosts -> Configuration -> <hostname> ->SMTP (then go to the bottom of this page) -> click "Advanced Settings" button.

    Regards,

    Federico