I am trying to send a mail from my ID, which is a standard no-reply email address. But, while sending, the mail is not getting sent and I get a message saying sending failed. I also see the below:

5.7.1 smtp; 550 5.7.1 Sender ID (PRA) Not Permitted

Hi team, I own a Windows 2010 laptop. I want to learn how I can send on behalf exchange 2010 using my laptop. Please explain in detail. I am using an exchange management shell for this.

I am having trouble with my printer. Whenever I connect my printer to my PC after some time, it says the printer is offline.Why does my printer go offline in Windows Vista?

How mapping of name to system's address is done? What is an A record? What does a stands for in 'a record' ? Why is it used?

I am confused whether I should buy WhatsUp Gold or Solar Winds.Which one is better: Whatsup Gold vs. Solar wind? What are the benefits of WhatsUp Gold?

I updated my iPhone and after that when I connect iPhone and launch iTunes nothing worked. Please tell me a solution my iPhone won't restore after the update.

I need a web content filtering appliance. Please tell me how do the web content filtering appliance works? Suggest me some web filtering appliance for my small business having 80-90 users.

My weather gadget is not working.It is showing weather gadget cannot connect to service. Please suggest me some ways to fix this error- weather gadget cannot connect to service?

How can I get vsphere web client free in ESXi 5.5? Is there any difference between the unpaid one and the paid one? Are there features same?

I want to download vsphere web client.How can I download vsphere web client? Is vsphere web client download free? Tell me the steps to download vsphere web client 5.5.