Excuse my english
I have a zimbra 8.0.6_GA_5922.RHEL6_64_20131203103705 RHEL6_64 FOSS edition
my MTA trusted network is (192.168.1.0/24 192.168.2.0/24..)
mi Zimbra Serever : 192.168.1.50

i want :

In my MTA trusted network
IMAP/ POP3 Server:192.168.1.50 Port: (143) SSL: (None) Identification: (normal password)
SMTP Server:192.168.1.50 Port: (25) SSL: (None) Identification: (normal Password)

Outside of my MTA trusted network
IMAP/ POP3 Server:192.168.1.50 Port: (143) SSL: (STARTTLS) identification: (normal password)
SMTP Server:192.168.1.50 Port: (587) SSL: (STARTTLS) Identification: (normal Password)

I can do this??
I have more than 300 clients thunderbird in my trusted network, my OLD server is configured this way
THanks,