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Mailbox servers allow computers running a client program to access mail residing on the server. POP3 and IMAP4 are protocols for providing such capabilities. PMDF provides POP and IMAP servers. These servers can be used with clients running on PC, Macintosh, UNIX, OpenVMS, or other computer systems to acccess mailboxes on the system running PMDF.1
On NT, PMDF provides a POP server and an IMAP server that serve out PMDF MessageStore mailboxes; this POP server can also serve out PMDF popstore mailboxes.
On OpenVMS and UNIX, PMDF currently provides two different POP3 servers and two different IMAP4rev1 servers. The two different POP3 servers provided for these platforms will be referred to as the legacy mailbox POP server and the PMDF MessageStore mailbox POP server; the two different IMAP servers provided will be referred to as the legacy mailbox IMAP server and the PMDF MessageStore mailbox IMAP server. The legacy mailbox IMAP and POP servers serve out VMS MAIL mailboxes (OpenVMS) or BSD mailboxes2 (UNIX); the legacy mailbox POP servers can also serve out PMDF popstore mailboxes. The PMDF MessageStore mailbox IMAP and POP servers serve out PMDF MessageStore mailboxes; the PMDF MessageStore mailbox POP server can also serve out PMDF popstore mailboxes.
Table 13-1 summarizes the above descriptions of the mailboxes supported by each server.
| Platform | Server | Legacy mailbox | MessageStore | popstore |
|---|---|---|---|---|
| (VMS MAIL or UNIX BSD) | mailbox | mailbox | ||
| OpenVMS | legacy POP | yes | no | yes |
| OpenVMS | MessageStore POP | no | yes | yes |
| OpenVMS | legacy IMAP | yes | no | no |
| OpenVMS | MessageStore IMAP | no | yes | no |
| UNIX | legacy POP | yes | no | yes |
| UNIX | MessageStore POP | no | yes | yes |
| UNIX | legacy IMAP | yes | no | no |
| UNIX | MessageStore IMAP | no | yes | no |
| NT | MessageStore POP | no | yes | yes |
| NT | MessageStore IMAP | no | yes | no |
Note that PMDF fully supports running multiple POP or IMAP servers on non-standard ports; OpenVMS or UNIX sites can run both supplied PMDF POP servers and both supplied PMDF IMAP servers, if they want, by running the different servers on different ports.
PMDF's POP and IMAP servers can be run on any system with a PMDF or PMDF-MTA license.
1 Normally the POP and IMAP clients do not run on the PMDF system itself; the PMDF system is the server system serving out mailboxes to POP and IMAP clients on other systems. But see the appropriate edition of the PMDF User's Guide for information on Pine, an IMAP or POP client that runs on the PMDF system, which is provided.2 Note that the location of those BSD mailboxes can be controlled by PMDF profile database entries. |
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