Virtual Users And Domains With Postfix ,transport table

[cy_ttcm]

I saw Falko Timme write the article [Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (CentOS 5.3 x86_64)].
I want to ask you a question.
Established in mysql, transport table role is that I can pass another public network IP forwarding mail?
How to set up public network IP which computer?

thanks

The transport table is optional, it is for advanced users. It allows to forward mails for single users, whole domains or all mails to another server. For example,
domain transport
example.com smtp:[1.2.3.4]
would forward all emails for example.com via the smtp protocol to the server with the IP address 1.2.3.4 (the square brackets [] mean "do not make a lookup of the MX DNS record" (which makes sense for IP addresses...). If you use a fully qualified domain name (FQDN) instead you would not use the square

[falko]

Yes, you can forward mails to another IP.

[cy_ttcm]

Yes, you can forward mails to another IP.

thk

How to set another host?

[falko]

Just use a hostname instead of an IP address.

[cy_ttcm]

Just use a hostname instead of an IP address.
Without understanding
for example

[falko]

Use a hostname like mail.example.com instead of an IP like 1.2.3.4.

[frogman]

Will using the transport table allow for store and forward functionality as a backup mail server for an entire domain?

Thanks in advance....

[falko]

You mean if mails will be forwarded to another server and at the same time a copy will be stored on this server? No, no copy will be stored on this server, but you can probably do this with maildrop.