note jbrugger [monarch] is right.<Br> On your own system you'd could cat /etc/services as root (i'd never do that in a script), but if you've got a proper configured linux like system, certain ports are reserved for proper use, indeed smtp (mail) connects to 25, pop connects to 110 and secure mail connects to 465.<br> There are many many more as you probably know. But why do you want to know to how to find out what port number sendmail uses in Perl?<br><Br> <!-- Node text goes above. Div tags should contain sig only --> <div class="pmsig"><div class="pmsig-417993"> <small>"We all agree on the necessity of compromise. We just can't agree on when it's necessary to compromise." - Larry Wall.</small> </div></div> 531625 531625