DEAR MY READER, I HAVE A VERY DEEP QUESTION, & I WANT TO ASK YOU GUYS REGARDING IT. in order to answer my question, please read first ( A- Introduction to what i Know .) . ITS ABOUT THE SMTP CONNECTOR. My Senario start with :- A- Introduction to what i Know . B- My senario & My Quetion on this senario. A- Introduction to what i Know . =================================== The SMTP connectors basically simply tell that SMTP engine how to route mail to out side or to internal mail server or where ever its need to go . Or, i can do the following with using SMTP Connector:- 1- For example, if i have 2 groups of users as the following:- Group A-------- Need to have the ability to send / Receive Internet mail. Group B-------- Need to have the ability only to send / receive ( INTERNAL ) NOT ( INTERNET ) MAil. so to do that, i will create 2 Smiple SMTP Connectors , as the following: A- First One, will only allow to realy to OUTSIDE - EXTERNAL DNS- to group of users only. B- The Second one, will only allow to relay INTERNAL NOT EXTERNAL to INTERNAL SERVER only to a group of users. i think Now, i am clear is that correct ? ============================================================================= My question is, if i have 2 SMTP DOMAIN as the following :- XYZ.COM & ABC.NET . Now, can i create 2 SMTP Connector, and each one responsible about Specific Company . For example, this is the configuration of SMTP Connector No 1:- Name: SMTP 1 Staus: Deliver the E-mails to the Smarthost of ISP. Address Space : xyz.com so this SMTP is responsible about sending all the messages which come from this Domain ( XYZ.COM ) , to this Smarthost. My Question is:- 1- Is that correct ? 2- I have to make 2 RUP & Each one is responsible to give each SMTP Address for specific users according to the condition which i put - on company name - . so i am correct , or i need to do an extra things ?