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# Footnotes

### (1)

Here at MIT, we connect to our server using `stunnel` to provide end-to-end encryption. This provides connection security without the need to integrate the encryption into the client or the server.

### (2)

URLs are defined in RFC 1738 and RFC 2396.

### (3)

The syntax for IMAP URLs is defined by RFC 2192, except that IMAIL uses only a subset of the defined syntax.

### (4)

This is in opposition to RFC 2192, which specifies use of the server-specific separator. RFC 2396 and RFC 2718 provide compelling arguments against this design.

### (5)

File URLs are defined in RFC 1738.

### (6)

IMAP also supports two other modes of operation, called offline mode and disconnected mode; at present IMAIL can not operate in these alternate modes.

### (7)

Although IMAP servers are allowed to disconnect mail readers that are inactive for long periods of time, IMAIL silently keeps the connection open by periodically transmitting commands to the server.

### (8)

While Emacs Rmail additionally supports the ability to retrieve mail from "system inboxes" on your local computer (usually ``/var/spool/mail/USER`' on unix systems), IMAIL does not. IMAIL only supports incoming mail when it is delivered to an IMAP server. This Rmail feature can easily be implemented if desired, but there has been no call for it.

### (9)

See the online help for the variable `adaptive-fill-regexp` for more information about adaptive fill.

This document was generated by Chris Hanson on November, 26 2001 using texi2html