Separate SMTP and POP systems

[clixclix]

Hi,
is it possible with ISPConfig3 multiserver to configure SMTP service and POP service for the same sites on different systems/servers?

Thanks in advance for any answer
Claudio

[till]

you can separate web from mailserver biut separating the smtp from the pop3 server does not make sense as both have to access the same mailbox files.

[clixclix]

If I'm not wrong, smtp service is not strictly related with the mailbox of the sender.
Since smtp service is usually a bandwidth-consuming service, my idea was to dedicate a server with high bandwidth availability to such service.
Obviously, I need the smtp server to only accept to send mail from authenticated clients.
In general I could install a standalone smtp server, but it wouldn't be connected with email accounts (username/password) created with the main ISPConfig instance.