I want to know how to use free avast antivirus with hMailServer
because it asks the executable file of antivirus avast folder but there SEVERAL executable file I have the mêtre what ?
Welcome to the forum. 
It appears that hMailServer is a webmail. I suggest you go to their forum to ask and get answers to your questions there since I am not familiar with this webmail: http://www.hmailserver.com/forum/.
If you still have problems, by all means continue asking questions in this thread that you created and we will attempt to assist you. Thank you.
this is the parameter of avast how you want hMailServer that the company may have the answer to this question there is that you can provide this same parameter in the admin to send you my hMailServer
I had forgotten this is not a webmail server but smtp