Cappper
asked on
Sender's messages getting bounced back
Sender: joe@xyz.com
Recipient: sam@abc.com
abc.com is one our clients and intermittently users are unable to send them a message. abc.com is running Exchange in house.
Example.
Everytime joe@xyz.com tryies to send a message to sam@abc.om joe gets the following bounce back.
-- The original message was received at Wed, 12 Sep 2007 12:38:10 -400 (EDT)
-- From intinamsmtp20.nam.pwcinter
--
-- --The following addresses had permanent fatal errors
-- <sam@abc.om>
--
--- -Transcript of session follows
-- 451 4.3.5 Error getting LDAP results in map ldapmra: Cant contact LDAP server
-- <sam@abc.om> &Deferred: Name server: abc.om.: host name lookup failure
-- Message could not be delivered for 1 day
-- Message will be deleted from queue
The thing is... nobody else at xyz.com has a problem sending to sam@abc.com. Only joe@xyz.com
This is happening intermittently with a couple people at different companies.
Any ideas would be great.
Recipient: sam@abc.com
abc.com is one our clients and intermittently users are unable to send them a message. abc.com is running Exchange in house.
Example.
Everytime joe@xyz.com tryies to send a message to sam@abc.om joe gets the following bounce back.
-- The original message was received at Wed, 12 Sep 2007 12:38:10 -400 (EDT)
-- From intinamsmtp20.nam.pwcinter
--
-- --The following addresses had permanent fatal errors
-- <sam@abc.om>
--
--- -Transcript of session follows
-- 451 4.3.5 Error getting LDAP results in map ldapmra: Cant contact LDAP server
-- <sam@abc.om> &Deferred: Name server: abc.om.: host name lookup failure
-- Message could not be delivered for 1 day
-- Message will be deleted from queue
The thing is... nobody else at xyz.com has a problem sending to sam@abc.com. Only joe@xyz.com
This is happening intermittently with a couple people at different companies.
Any ideas would be great.
ASKER
abc.com does not run any spam filtering at the moment. We will be moving them to a solution shortly but as of now... no.
ZYX.com is actually PriceWaterhouse Coopers. I am not sure what they are running for email servers but I would image it is an enterprise solution. Exchange most likely.
ZYX.com is actually PriceWaterhouse Coopers. I am not sure what they are running for email servers but I would image it is an enterprise solution. Exchange most likely.
Do you have any recipient filtering enabled on the Exchange ?
SOLUTION
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ASKER
Why then are other users from xyz.com able to send mail to abc.com but this one particular user can not not?
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ASKER
This was never resolved. Thanks for trying.
Might be the SMTP relay server or the spam filter trying to do a LDAP lookup on the SAM@abc.com user and it fails to get a valid result.
What e-mail server is xyz.com running ?