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.
AYKSolutions is thee best hosting solution I have found in 10 years of searching. I'm very grateful of the services they provide. Such a vast variety to host whatever you desire at a great rate. The support team has always been great, always get a reply within 4 Hours of posting, usually way before 4H. I have a range of 1-10gbit machines and they've always kept up with premium standards. Networks they sell are premium, guaranteed. Thank you, AYK :)
Great prices and service! Truly is painless, professional and polite (That's their slogan).
AYK Solutions has provided me with a very cost effective hosting service with great uptime and lots of features. I would not hesitate to recommend them!