Your message wasn't delivered because the recipient's email provider rejected it

Copper Contributor

Dear all,


Recently, I registered 1 account Office 365 trial to experience O365 E3 version before bought it, I create a sharepoint site, upload some document and share with somebody, both the same and diffrence trial domain & gmail also. The share function working well, but email notification seem to be getting issue as below. Please help to advise me.


PS: I search some conversation get the same my issue and they advise ask recipient admin unblock some policies and mechanisms that block my Office 365 email address and directly contact the recipient’s admin for support. I'm IT person and I believe there is no any specific policy that block my trial domain.


Diagnostic information for administrators:

Generating server:
Remote Server returned '550 5.7.501 Service unavailable. Spam abuse detected from IP range. For more information please go to S(2017052602) []'

Original message headers:

Received: from
 ([fe80::5970:b751:c67f:bc77]) by
 ([fe80::5970:b751:c67f:bc77%2]) with mapi id 15.20.1965.017; Thu, 13 Jun 2019
 07:34:39 +0000
MIME-Version: 1.0
Content-Type: text/plain
Date: Thu, 13 Jun 2019 07:34:39 +0000
60 Replies

@alecsu2017 The issue can be as simple as having a VPN on that changes the IP address of your machine. If you have one on try switching it off and check if you can send emails once more.