Vesta Control Panel - Forum

99.99 percent of my customers are using certain domains to send email to me. How can I tell exim to only accept these emails?

lets say the domains I want to white-list are

gmail.com
yahoo.com
all domains ending with .ac.ir

All domains are white listed...unless you start grey/blacklisting domains.

Can you mention your specific problem ? do you suspect you are missing incoming mails ? Try checking if your IP or Domain are on any RBLs and your MX records are propagated properly.