If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.
|How to get all Distribution Groups where a security Group is configured as Allowed to send||3||46|
|Powershell script that will match the strings in two files and send the file as attachment to the reciepient||13||95|
|Remote Server returned '<mail.mycompany #5.7.1 smtp; 554 5.7.1 Error: need authentication from mail.client.com>'||5||13|
|external emails from exchange 2013 bouncing back Remote Server returned '550 #5.1.0 Address rejected||13||38|