I have a cloud hosting with 4 websites, there is an malware or spam bot infection in the server, possibly in a VBulletin folder.
Entire hosting of 4 small sites and DBs must be checked for affected files, and secured from future problem. And mail server corrected and unlisted from spam database.
Please do not bid if you don't have experience on dedicated hosting on Plesk
Must have relevant references of similar jobs you have done in the past.