We help IT Professionals succeed at work.

Exchange 2016 Unable to relay recipient in non-accepted domain

C Y
C Y used Ask the Experts™
on
Hi expert,

Outsider send email to our company email but it doesnt get deliver to exchange server.

I have check logs in D:\Program Files\Microsoft\Exchange Server\V15\TransportRoles\Logs\FrontEnd\ProtocolLog\SmtpReceive

it is showing Unable to relay recipient in non-accepted domain

Is there a receive / send connector i need to configure?
However, i try to send email from my personal hotmail to exchange, the email is received.

How can i resolve this?  why is this happening?
Thanks.
Comment
Watch Question

Do more with

Expert Office
EXPERT OFFICE® is a registered trademark of EXPERTS EXCHANGE®
MASEE Solution Guide - Technical Dept Head
Most Valuable Expert 2017

Commented:
Can you please post a screenshot?
I am not clear
Top Expert 2016

Commented:
The outsider has to use their own mail server and not use your mail server to send mail.
C Y

Author

Commented:
Hi all,

My vendor send me an email and i'm having trouble receive it, the email has reach our email gateway and the logs shows it has been deliver to exchange server.

in exchange server, i checked the logs in D:\Program Files\Microsoft\Exchange Server\V15\TransportRoles\Logs\FrontEnd\ProtocolLog\SmtpReceive, below are the logs:-

 exchange01,08D78394BFAC350E,0,192.39.X.X:25,192.39.X.X34:35140,+,,
2020-01-13T01:48:58.193Z,exchange01\Default Frontend exchange01,08D78394BFAC350E,1,192.39.X.X:25,192.39.X.X34:35140,>,"220 exchange01.test.net.my Microsoft ESMTP MAIL Service ready at Mon, 13 Jan 2020 09:48:57 +0800",
2020-01-13T01:48:58.193Z,exchange01\Default Frontend exchange01,08D78394BFAC350E,2,192.39.X.X:25,192.39.X.X34:35140,<,EHLO testpamsg01.test.net.my,
2020-01-13T01:48:58.193Z,exchange01\Default Frontend exchange01,08D78394BFAC350E,3,192.39.X.X:25,192.39.X.X34:35140,>,250  exchange01.test.net.my Hello [192.39.X.X34] SIZE 10485760 PIPELINING DSN ENHANCEDSTATUSCODES STARTTLS X-ANONYMOUSTLS AUTH NTLM X-EXPS GSSAPI NTLM 8BITMIME BINARYMIME CHUNKING XRDST,
2020-01-13T01:48:58.194Z,exchange01\Default Frontend exchange01,08D78394BFAC350E,4,192.39.X.X:25,192.39.X.X34:35140,<,MAIL FROM:<mastersam@test.net.my>,
2020-01-13T01:48:58.194Z,exchange01\Default Frontend exchange01,08D78394BFAC350E,5,192.39.X.X:25,192.39.X.X34:35140,*,08D78394BFAC350E;2020-01-13T01:48:58.193Z;1,receiving message
2020-01-13T01:48:58.194Z,exchange01\Default Frontend exchange01,08D78394BFAC350E,6,192.39.X.X:25,192.39.X.X34:35140,>,250 2.1.0 Sender OK,
2020-01-13T01:48:58.194Z,exchange01\Default Frontend exchange01,08D78394BFAC350E,7,192.39.X.X:25,192.39.X.X34:35140,<,RCPT TO:<m.sheqal@vendorsec.com>,
2020-01-13T01:48:58.194Z,exchange01\Default Frontend exchange01,08D78394BFAC350E,8,192.39.X.X:25,192.39.X.X34:35140,*,Tarpit for '0.00:00:05' due to '550 5.7.54 SMTP; Unable to relay recipient in non-accepted domain',
2020-01-13T01:49:01.563Z,exchange01\Default Frontend exchange01,08D78394BFAC350F,0,127.0.0.1:25,127.0.0.1:30514,+,,
2020-01-13T01:49:01.563Z,exchange01\Default Frontend exchange01,08D78394BFAC350F,1,127.0.0.1:25,127.0.0.1:30514,>,"220 exchange01.test.net.my Microsoft ESMTP MAIL Service ready at Mon, 13 Jan 2020 09:49:01 +0800",
2020-01-13T01:49:01.563Z,exchange01\Default Frontend exchange01,08D78394BFAC350F,2,127.0.0.1:25,127.0.0.1:30514,<,EHLO,
2020-01-13T01:49:01.563Z,exchange01\Default Frontend exchange01,08D78394BFAC350F,3,127.0.0.1:25,127.0.0.1:30514,>,250  exchange01.test.net.my Hello [127.0.0.1] SIZE 10485760 PIPELINING DSN ENHANCEDSTATUSCODES STARTTLS X-ANONYMOUSTLS AUTH NTLM X-EXPS GSSAPI NTLM 8BITMIME BINARYMIME CHUNKING XRDST,
2020-01-13T01:49:01.563Z,exchange01\Default Frontend exchange01,08D78394BFAC350F,4,127.0.0.1:25,127.0.0.1:30514,<,QUIT,
2020-01-13T01:49:01.563Z,exchange01\Default Frontend exchange01,08D78394BFAC350F,5,127.0.0.1:25,127.0.0.1:30514,>,221 2.0.0 Service closing transmission channel,
2020-01-13T01:49:01.564Z,exchange01\Default Frontend exchange01,08D78394BFAC350F,6,127.0.0.1:25,127.0.0.1:30514,-,,Local
2020-01-13T01:49:03.206Z,exchange01\Default Frontend exchange01,08D78394BFAC350E,9,192.39.X.X:25,192.39.X.X34:35140,>,550 5.7.54 SMTP; Unable to relay recipient in non-accepted domain,
2020-01-13T01:49:03.207Z,exchange01\Default Frontend exchange01,08D78394BFAC350E,10,192.39.X.X:25,192.39.X.X34:35140,<,RSET,
2020-01-13T01:49:03.207Z,exchange01\Default Frontend exchange01,08D78394BFAC350E,11,192.39.X.X:25,192.39.X.X34:35140,*,Tarpit for '0.00:00:05' due to '250 2.0.0 Resetting',
2020-01-13T01:49:08.220Z,exchange01\Default Frontend exchange01,08D78394BFAC350E,12,192.39.X.X:25,192.39.X.X34:35140,>,250 2.0.0 Resetting,
2020-01-13T01:49:08.220Z,exchange01\Default Frontend exchange01,08D78394BFAC350E,13,192.39.X.X:25,192.39.X.X34:35140,<,QUIT,

Commented:
vendorsec.com, test.net.my
both are not  showing any mx pointing .

check the DNS  ip on hosting, any firewall nat issues..

all the best
112.png
Commented:
Issue resolved after i disabled antispam in exchange server.