The following global MTA settings can be configured.
Option |
Description |
Authentication |
Authentication
should be enabled, to support mobile SMTP authentication users
so that their email client can talk to the Zimbra MTA.
TLS authentication
only forces all SMTP auth
to use Transaction Level Security (similar to SSL) to avoid
passing passwords in the clear.
|
Network |
Web mail
MTA Host name and
Web mail MTA Port. The MTA that the web server connects
to for sending mail. The default port number is 25.
Relay MTA
for external delivery. (e.g., the ISP requires that
all mail originating from your network be relayed through
their MTA) to which the Zimbra Postfix relays non-local email.
See Relay MTA
for external delivery.
If Enable DNS lookups is checked, the Zimbra
MTA makes an explicit DNS query for the MX record of the recipient
domain. If this option is disabled, set a relay host in the
Relay MTA for external delivery.
|
Milter Server |
- If Enable Milter Server is checked, the milter enforces
the rules that are set p for who can send email to a distribution
list.
|
Messages |
Set the maximum messages size for a message
and its attachments that can be received. Note:
To set the maximum size for files uploaded to Briefcase, go
to the Global Settings>General Information page.
This is enabled by default. Every email sent
directly from the server includes the X-Originating-IP in
the message header. This specifies the original sending IP
of the email message the server is forwarding.
|
Policy
Service Checks |
|
Protocol checks |
|
DNS checks |
To reject mail if the client’s IP address
is unknown, the hostname in
the greeting is unknown, or if the sender’s domain is unknown.
Add other email recipient restrictions to
the List of RBLs text box.
|