user@recepientdomain.com.kw on Mon, 27 Aug 2012 15:15:39 +0300 There was a SMTP communication problem with the recipient's email server. Please contact your system administrator.<daleel1.daleelintl.com #5.5.0 smtp;553 sorry, that address is not in my list of allowed recipients (#5.7.1)> user@recepientdomain.com.kw on Mon, 27 Aug 2012 15:15:39 +0300 There was a SMTP communication problem with the recipient's email server. Please contact your system administrator. <daleel1.daleelintl.com #5.5.0 smtp;553 sorry, that address is not in my list of allowed recipients (#5.7.1)> user@recepientdomain.com.kw on Mon, 27 Aug 2012 15:15:39 +0300 There was a SMTP communication problem with the recipient's email server. Please contact your system administrator. <daleel1.daleelintl.com #5.5.0 smtp;553 sorry, that address is not in my list of allowed recipients (#5.7.1)> user@recepientdomain.com.kw on Mon, 27 Aug 2012 15:15:39 +0300 There was a SMTP communication problem with the recipient's email server. Please contact your system administrator. <daleel1.daleelintl.com #5.5.0 smtp;553 sorry, that address is not in my list of allowed recipients (#5.7.1)> Muhammad Nauman

Suggest apporiate solutionMuhammad Nauman

Hi, Please have a look on this. http://social.technet.microsoft.com/Forums/en-US/exchangesvrantivirusandantispam/thread/64469c08-70cf-4ca6-aa46-8a07bf9bb3e0/Kottees : My Blog : Please mark it as an answer if it really helps you.

On Wed, 29 Aug 2012 08:01:51 +0000, Nauman Butt wrote: > > >user@recepientdomain.com.kw on Mon, 27 Aug 2012 15:15:39 +0300 There was a SMTP communication problem with the recipient's email server. Please contact your system administrator.<daleel1.daleelintl.com #5.5.0 smtp;553 sorry, that address is not in my list of allowed recipients (#5.7.1)> > >user@recepientdomain.com.kw on Mon, 27 Aug 2012 15:15:39 +0300 There was a SMTP communication problem with the recipient's email server. Please contact your system administrator. <daleel1.daleelintl.com #5.5.0 smtp;553 sorry, that address is not in my list of allowed recipients (#5.7.1)> > >user@recepientdomain.com.kw on Mon, 27 Aug 2012 15:15:39 +0300 There was a SMTP communication problem with the recipient's email server. Please contact your system administrator. <daleel1.daleelintl.com #5.5.0 smtp;553 sorry, that address is not in my list of allowed recipients (#5.7.1)> > >user@recepientdomain.com.kw on Mon, 27 Aug 2012 15:15:39 +0300 There was a SMTP communication problem with the recipient's email server. Please contact your system administrator. <daleel1.daleelintl.com #5.5.0 smtp;553 sorry, that address is not in my list of allowed recipients (#5.7.1)> Whatever you're using as a SMTP relay isn't accepting messages to that domain from you. If you're using your ISP's SMTP relay you should contact them for help. You can also check your SMTP Send protocol logs and verify that the address you're sending those messages to is the lowest numbered MX record for whatever the domain it is that's the problem. Perhaps they have a badly configured set of MX records. You can also verify that your DNS is returning the correct set of DNS results. Use a public DNS such as the one at IP address 8.8.8.8 to do that. --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVP

Actually the problem is with only one computer ms outlook 2007 and pop/smtp account. other computer is working porperly with exchange account i havent check with pop/smtp account now what do you think about this errorMuhammad Nauman

Hello, Follow Rich's suggestion. Besides, please verify if there is the same error when the sender send message to other domains. And please do the test on the sender's mail server by using the telnet cmdlet. Best Regards, Lisa

Only the specific domain user@gulfnet.com.kw Sender can send message to other domain. ok i will telnet and check with sender mail account Muhammad Nauman

Hello, And please check if senders mail server IP address is listed in allowing list. Best Regards, Lisa

On Thu, 30 Aug 2012 05:37:58 +0000, Nauman Butt wrote: >Actually the problem is with only one computer ms outlook 2007 and pop/smtp account. > >other computer is working porperly with exchange account i havent check with pop/smtp account > >now what do you think about this error If the one computer is using a SMTP server that's not your Exchange server then I still say the ISP is the place to go to find the resolution to your problem. --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVP