troubleshooting Question

Exchange 2010 refused connection from sender

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patcheahFlag for Malaysia asked on
Exchange
6 Comments2 Solutions1097 ViewsLast Modified:
Dear Expert,

I have a customer that cant send email to us recently, the log they provided state below,

2013-12-24 17:29:22,OUTBOUND,jmchen@efgh.com.tw<mailto:jmchen@efgh.com.tw>(172.21.36.135),joyce@abc,com<mailto:joyce@abc,com>(101.99.x.x-mail.abc,com<http://101.99.x.x-mail.abc,com>),967613063,22545,QUEUED,601,Deferred: Connection refused by mail.abc,com<http://mail.abc,com>
2013-12-24 17:29:22,OUTBOUND,miahsieh@efgh.com.tw<mailto:miahsieh@efgh.com.tw>(172.21.36.135),joyce@abc,com<mailto:joyce@abc,com>(101.99.x.x-mail.abc,com<http://101.99.x.x-mail.abc,com>),513374723,53521,QUEUED,601,Deferred: Connection refused by mail.abc,com<http://mail.abc,com>
2013-12-24 17:29:22,OUTBOUND,jmchen@efgh.com.tw<mailto:jmchen@efgh.com.tw>(172.21.36.135),joyce@abc,com<mailto:joyce@abc,com>(101.99.x.x-mail.abc,com<http://101.99.x.x-mail.abc,com>),914463265,13973,QUEUED,601,Deferred: Connection refused by mail.abc,com<http://mail.abc,com>
2013-12-24 17:29:22,OUTBOUND,miahsieh@efgh.com.tw<mailto:miahsieh@efgh.com.tw>(172.21.36.135),joyce@abc,com<mailto:joyce@abc,com>(101.99.x.x-mail.abc,com<http://101.99.x.x-mail.abc,com>),1285071653,25209,QUEUED,601,Deferred: Connection refused by mail.abc,com<http://mail.abc.com>


I did check their domain name, the spf and reversed dns is not found.

could it be the cause?

remarks: only this customer is having problem to send email to us

Thanks
Alfred
ASKER CERTIFIED SOLUTION
Marcus Bointon

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