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Remote Server returned '550 Not permitted '

JPH
Member

Hi,

 

For the last couple of hours we have started recieving the error message;

Remote Server returned '550 Not permitted '

 

Nothing has changed from our servers perspective. Is there something that can be done to fix? I have attached below the rejected email header that was sent to my own email address as a test but all email addresses are currently failing.

 

Thanks,

 

Jim

 

Original message headers:

Received: from MAYSCO-EXCHANGE.mayscofield.local (192.168.1.8) by Maysco-Exchange.mayscofield.local (192.168.1.8) with Microsoft SMTP Server (TLS) id 15.0.775.38; Thu, 14 May 2015 11:43:34 +0100Received: from MAYSCO-EXCHANGE.mayscofield.local ([fe80::586d:1d6:8ae6:405b]) by Maysco-Exchange.mayscofield.local ([fe80::586d:1d6:8ae6:405b%13]) with mapi id 15.00.0775.031; Thu, 14 May 2015 11:43:34 +0100From: Jim P Hill <jphill@May-Scofield.co.uk>To: "jp.hill@me.com" <jp.hill@me.com>Subject: TestingThread-Topic: TestingThread-Index: AdCOMtLMli+OFyVNTgikmNEyYbN32Q==Date: Thu, 14 May 2015 10:43:33 +0000Message-ID: <3d6eb03f12c5430fbd5e287b8d1a8c2d@Maysco-Exchange.mayscofield.local>Accept-Language: en-GB, en-USContent-Language: en-USX-MS-Has-Attach:X-MS-TNEF-Correlator:x-originating-ip: [192.168.1.34]Content-Type: multipart/alternative;        boundary="_000_3d6eb03f12c5430fbd5e287b8d1a8c2dMayscoExchangemayscofie_"MIME-Version: 1.0

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