421 4.4.0 [internal] no MXs for this domain could be reached at this time........
Updated: 20 Oct 2010 | 4 comments
This issue has been solved. See solution.
I have the SBG version 8.0.3-11 running on VmWare ESX4.
Getting lots of error of this kind "421 4.4.0 [internal] no MXs for this domain could be reached at this time" and daily around 200-300 mails are stucking in the Delivery queue.
Can anyone help me to resolve this issue......
Thanks in advace for the solution and efforts for this discussion..
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Are these mails to legitimate
Are these mails to legitimate domains? I am thinking may be these mails are NDRs (mail from MAILER-DAEMON) going out to bogus domains.
Regards,
Adnan
Yeah, they are most likely
Yeah, they are most likely NDRs we are trying to send to fake email addresses
You should consider setting up an LDAP source so we will not accept messages for users that don't exist.
No they are not
No they are not the NDRs but they are the legitimate mails to legitimate domains.
Domains like yahoo.com, icicibank.com, etc....
Regards,
Prashant Thumar
Hi Prashant, Please take a
Hi Prashant,
Please take a look at the following KB article for some suggestions:
http://service1.symantec.com/SUPPORT/ent-gate.nsf/...
Regards,
Adnan
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