Allows you to search a variety of questions and answers
One way to fix this is as follows:
1. Login to your WHM as root and click on Exim Configuration Editor on your left.
2. Uncheck the box that says: Use callouts to verify the existence of email senders and Save.
3. Go back to the Editor and click the Advanced Editor button.
4. Do a search for sender/callout.
5. When you find it, delete 'callout' and leave only 'sender'. Save.
Great host, have tried many they're certainly a top choice for me. Premium bandwidth, great prices, 100% stable, and great support.
I have a two small shared hosting packages and the price I pay I don't expect to receive very good support. I accept with any shared hosting uptime cannot be guaranteed neither can it be 100% and anyone who suggests otherwise is living a dream. However on the occasions I have opened a ticket they have been answered and investigated promptly. I have been with ayksolutions.com since Jun/18/2008 oh wow where has the time gone!
Even though I only have a shared hosting plan, their technical support team responded to my tech support request within the hour, and correctly to boot. (I needed to have a subdomain point to a Tumblr blog by changing the CNAME.)