Problems with Exim and Tainted

The system (VestaCP) works correctly when using exim version exim-4.93, however in version 4.94 exim has problems. In version 4.94 the exim developers incorporated a new concept… "Tainted" and when something contaminated is used the result will be contaminated and this will present problems. Symptom: no emails are received Order: Regular expressions containing polluted variables must be converted and left 'clean' so that exim can work properly and emails can finally be received. Only the [login to view URL] file will be delivered where you can see the regular expressions that have problems. No root access Help: the problem is presented in the "Router Configuration" section (Tainted: $domain and and $local_part)