VPOP3 has three types of Mail Connector which are configured by going to the Mail Connectors tab in the VPOP3 settings:
•Connections
•Mail Collectors
•Mail Senders
These are summarised below, along with the Connector Schedule which is linked tightly with these
A Connection tells VPOP3 how to connect to the Internet. Nowadays, these are usually set to connect via a router, and have very little configuration.
In the past (and still, in some specialised configurations), a Connection may tell VPOP3 to connect using a dial-up connection which VPOP3 controls. These have much more configuration involved.
VPOP3 can have up to 10 Connections defined
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A Mail Collector tells VPOP3 how to collect mail from a remote mail server (usually your Internet Provider).
Usually this tells VPOP3 how to collect mail from an external POP3 server. It can also be used to tell VPOP3 to trigger an incoming SMTP feed (e.g. on dial-up connections, or if you need to send an ETRN command) or to start an ODMR (also known as ATRN) mail collection.
You do not usually need to use a Mail Collector to have an incoming SMTP feed with a permanent Internet connection.
VPOP3 can have an unlimited number of Mail Collectors defined.
Each Mail Collector can be associated with one or more Connections. There is no limit to the number of Mail Collectors which can be associated with a Connection.
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A Mail Sender tells VPOP3 how to send mail to a remote mail server (e.g. your ISP's smarthost), or using direct MX routing using SMTP.
Each Mail Sender is associated with only one Connection. Each Connection can only have one Mail Sender. This means that VPOP3 can have up to 10 Mail Senders defined.
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The Connector Schedule tells VPOP3 when to connect to send/receive emails.
Each Schedule item tells VPOP3 when to connect using one or more Connections. Because each Connection can have multiple Mail Collectors associated with it, that means that each Schedule item can start multiple Mail Collectors.
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The way that the Schedule, Connections and Collectors are linked means that it is simple to set up the most common scenarios, but it is still possible to have more complex variations.
For instance:
➢You can have one Connection defined, with multiple Collectors defined to collect from several ISP POP3 mailboxes every few minutes, according to the Schedule.
➢You may want to collect mail from some ISP mailboxes more frequently than from others. In this case, create two Connections, and associate some Collectors with the first Connection, and the rest of the Collectors with the second Connection. Then, set up two Schedule items, one to trigger the first Connection more frequently (e.g. every 5 minutes) and the second Connection less frequently (e.g. every 30 minutes).
