Ports auf der Firewall öffnen für Mail-Server

Posted by moenk on
Je nach Anforderung kann es erforderlich sein einige dieser Ports auf der Firewall zu öffnen.
Grundsätzlich ist zunächst einmal ein Konzept zu erstellen, wie der Fluss der Mails durch Clients, den Server und das Internet laufen soll.
pop3: 110
pop3/SSL: 995
IMAP4: 143
IMAP4/SSL: 993
LDAP: 389
SMTP: 25
HTTP: 80
HTTP/SSL: 443
NNTP: 119-120
GK: 3268
http://de.wikipedia.org/wiki/Ports

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