I need to raise the postfix smtp session timeout, due to a delivery robots bad manners..

I can add the smtpd_timeout in the main.cf postfix file, but will it remain there after some gui or zmprov config? I suppose not..

Is the zmprov setting zimbraSmtpTimeout the Web MTA timeout from the admin gui, that says seconds on the page. But the help says that unit is in minutes... I'm a bit confused by this item. Or is it ment to be the session timeout although it's not placed in the main.cf file?