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In order for email clients to access mail via POP3 or IMAP, POP3 and/or IMAP daemons must run on the email server.

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In order for email clients to access mail via POP3 or IMAP, POP3 and/or IMAP daemons must run on the email server.

Under the POP3 protocol, mail is physically transferred to the email client, under the IMAP protocol, mail remains on the email server but is read remotely. Of course, it can also be deleted. IMAP has the ability to let the remote mail client look at mail in folders other than the user's incoming mail spool. POP3 might be able to download mail from folders other than the user's incoming mail spool, but it's not clear to me so far that's an advantage -- the mail might all end up in the same inbox, negating the advantage of any procmail processing that might have been done on the server, and even if that's not the case, if you delete the mail from the server it is no longer accessible from other clients on the network, and if you leave the mail on the server and the client you now have two copies with all the potential problems that entails.

Postfix (the MTA) provides the ability for the email server to receive mail on port 25 from local email clients and "relay" it towards its final destination.

Contributors

  • () RandyKramer - 03 Oct 2002
  • <If you edit this page: add your name here; move this to the next line; and include your comment marker (initials), if you have created one, in parenthesis before your WikiName.>

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Topic revision: r1 - 2002-10-03 - RandyKramer
 
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