Remove malware and blacklist and restart sending emails again in Linux server

I'm looking for an expert to help remove malware and restore our Linux server so that it is free of blacklisting and is sending emails properly again. I'm looking for someone experienced in Linux servers who knows which software to use to remove the malware - I've already selected Linux Malware Detect, however I'm open to other suggestions. I'm also uncertain about whether or not the server needs to be restarted after the malware is removed - I'm open to advice and suggestions. Finally, the server being used is Linux - I'm looking for someone with experience in the Linux environment who can help get my server fully functioning again.