Google Apps Directory Sync for Postini Services Administration Guide - Manual (Page 28)

Configuration 31
Immediately send a
welcome message
to new users Typically, the message security service sends
welcome notifications to new users within 24 hours, but
not immediately. This is to prevent a flood of welcome
that may overload your mail server.
If you want to send all the notifications immediately,
check the box labelled “Immediately send a welcome
message to new users.”
SSL Proxy Host
Name
(if needed)
If your server is running behind a firewall that requires
an SSL Proxy to connect to an outside server, enter
the proxy host name here.
If you can connect directly to the internet from this
machine, leave this field blank.
Example: firewall01.mixateriacorp.com
SSL Proxy Host Port
(if needed)
If your server is running behind a firewall that requires
an SSL Proxy to connect to an outside server, enter
the proxy host port here. Otherwise, leave this field
blank.
Common ports for SSL proxy are 80, 8080, 3128 and
1080.
Example: 8080
SSL Proxy User
Name
(if required)
If your server is running behind a firewall that requires
an SSL Proxy to connect to an outside server, and that
proxy requires authentication, enter the proxy
authentication user name here.
Otherwise, leave this field blank.
Example: proxyuser01
SSL Proxy
Password
(if required)
If your server is running behind a firewall that requires
an SSL Proxy to connect to an outside server, and that
proxy requires authentication, enter the proxy
authentication password here.
Otherwise, leave this field blank.
Example: swordfish
Authentication Setting Description