Am 20.11.2014 um 06:55 schrieb Mohammed Ejaz:
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*
that is just a warning about a bad PTR/A-Record setup of the sending machine -> http://en.wikipedia.org/wiki/Forward-confirmed_reverse_DNS
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.
ask the admin on the other side instead a public group about *his* "security policies"
ion...@akigroup.com <mailto:ion...@akigroup.com> 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 ion...@akigroup.com <mailto:ion...@akigroup.com> pop.alphamedgroup.com #<pop.alphamedgroup.com #5.7.1 smtp; 550 5.7.1 Unable to deliver to <ion...@akigroup.com <mailto:ion...@akigroup.com>>>
