My customer had big campaing in news papers and telvision, where they adverse they site. Two days later server crashed couse of bandwidth error... Ok this is not my quetion, but... I get stress of the cmsms site's resistance of the ability to handle forexamble formbuilder module. I have form builder where site users sent they information to the customer via mail. How CMSMS mailer can handle 2000 users in one day if they all use form builder same time? I am just designer and I dont know how they are builded. Can I sleep my night in peace

Thank you if you giving me some information about high traffic cmsms sites.
-R