Remote Server returned '554 5.4.4
Remote Server returned '554 5.4.4 SMTPSEND.DNS.MxLoopback; DNS records for this domain are configured
May 4th, 2015 5:32am

Hi ,

Please check the below mentioned link and it may help you .

http://blogs.technet.com/b/exchange/archive/2013/03/28/mysterious-mail-loop-on-edge-transport-server-check-your-size-limits.aspx

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May 4th, 2015 6:25am
Remote Server returned '554 5.4.4 SMTPSEND.DNS.MxLoopback; DNS records for this domain are configured
May 5th, 2015 5:21am

it happen from 1 month ago,

DC windows server 2008 r2 (DNS-DHCP-CER)

EXCHANGE SERVER (ONE SERVER ) 2013 CU8 -WINDOWS SERVER 2008R2

TMG -WINDOWS SERVER 2008R2 EXTERNAL IP -pointed to ISP extern

Free Windows Admin Tool Kit Click here and download it now
May 5th, 2015 5:29am

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