hello,
Please experiencing two issues with customer. any explanation would be highly appreciated. 1. I have several entries as below for our one of the customer whose relaying his email through our mail servers Nov 20 07:41:05 mersal postfix/smtpd[30971]: warning: 212.118.122.108: address not listed for hostname mail.electro.com.sa Nov 20 07:41:05 mersal postfix/cleanup[31008]: 97C4B11A09F: message-id=<[email protected]> Nov 20 07:41:06 mersal postfix/qmgr[11505]: 97C4B11A09F: from=<[email protected]>, size=250121, nrcpt=1 (queue active) Nov 20 07:44:10 mersal postfix/smtpd[30958]: warning: 212.118.122.108: address not listed for hostname mail.electro.com.sa 2. What could be reason as the sent messages one of our users get bounce back with the following info. whereas our IP reputation is clean. <mailto:[email protected]> [email protected] Your message wasn't delivered because of security policies. Microsoft Exchange will not try to redeliver this message for you. Please provide the following diagnostic text to your system administrator. The following organization rejected your message: pop.alphamedgroup.com. Diagnostic information for administrators: Generating server: mersal.cyberia.net.sa [email protected] <mailto:[email protected]> pop.alphamedgroup.com #<pop.alphamedgroup.com #5.7.1 smtp; 550 5.7.1 Unable to deliver to <[email protected] <mailto:[email protected]> >> #SMTP# Original message headers: Received: from mail.unitedgroup.com.sa (SRV-EXCHHUB.unitedgroup.com.sa [213.210.243.36]) by mersal.cyberia.net.sa (Postfix) with ESMTP id BAB9F11A09C for <[email protected] <mailto:[email protected]> >; Wed, 19 Nov 2014 15:44:55 +0300 (AST) Received: from SRV-EXCHANGE.unitedgroup.com.sa ([191.0.0.11]) by SRV-EXCHHUB.unitedgroup.com.sa ([191.0.0.18]) with mapi; Wed, 19 Nov 2014 15:35:32 +0300 From: Elias Sleiman <[email protected] <mailto:[email protected]> > To: "[email protected] <mailto:[email protected]> " <[email protected] <mailto:[email protected]> > Date: Wed, 19 Nov 2014 15:35:25 +0300 Subject: Burger fuel - Cheese supply Thread-Topic: Burger fuel - Cheese supply Thread-Index: AdAD9Ur5R5GMhgiWRbSB/MLhQRJW8g== Message-ID: <4f4e9a676dd5c94aaca1d2fe1342d3104452ae9...@srv-exchange.unitedgroup.com.sa <mailto:4F4E9A676DD5C94AACA1D2FE1342D3104452AE951D@SRV-EXCHANGE.unitedgroup. com.sa> > Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: yes X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: multipart/related; boundary="_005_4F4E9A676DD5C94AACA1D2FE1342D3104452AE951DSRVEXCHANGEun_"; type="multipart/alternative" MIME-Version: 1.0 Ejaz
