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Mail server using POP3

 
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Operating Systems Linux Red Hat Mail server using POP3
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Old 03-18-2011
Mail server using POP3

Hi,

I am trying to set up a mail server on Redhat9. I have read about POP3 and have decided to use that. However, I am unable to configure the files properly.

Can anyone tell me how to configure POP3?

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pop3(n) 						      Tcl POP3 Client Library							   pop3(n)

__________________________________________________________________________________________________________________________________________________

NAME
pop3 - Tcl client for POP3 email protocol SYNOPSIS
package require Tcl 8.2 package require pop3 ?1.6.3? ::pop3::open ?-msex 0|1? ?-retr-mode retr|list|slow? host username password ?port? ::pop3::config chan ::pop3::status chan ::pop3::last chan ::pop3::retrieve chan startIndex ?endIndex? ::pop3::delete chan startIndex ?endIndex? ::pop3::list chan ?msg? ::pop3::top chan msg n ::pop3::uidl chan ?msg? ::pop3::close chan _________________________________________________________________ DESCRIPTION
The pop3 package provides a simple Tcl-only client library for the POP3 email protocol as specified in RFC 1939 (http://www.rfc-edi- tor.org/rfc/rfc1939.txt). It works by opening the standard POP3 socket on the server, transmitting the username and password, then provid- ing a Tcl API to access the POP3 protocol commands. All server errors are returned as Tcl errors (thrown) which must be caught with the Tcl catch command. COMMANDS
::pop3::open ?-msex 0|1? ?-retr-mode retr|list|slow? host username password ?port? Open a socket connection to the server specified by host, transmit the username and password as login information to the server. The default port number is 110, which can be overridden using the optional port argument. The return value is a channel used by all of the other ::pop3 functions. The command recognizes the options -msex and -retr-mode. The first of them can be used to notify the package of the fact that the server to talk to is an MS Exchange server (which has some oddities we have to work around). The default is 0. The retrieval mode determines how exactly messages are read from the server. The allowed values are retr, list and slow. The default is retr. See ::pop3::retrieve for more information. ::pop3::config chan Returns the configuration of the pop3 connection identified by the channel handle chan as a serialized array. ::pop3::status chan Query the server for the status of the mail spool. The status is returned as a list containing two elements, the first is the num- ber of email messages on the server and the second is the size (in octets, 8 byte blocks) of the entire mail spool. ::pop3::last chan Query the server for the last email message read from the spool. This value includes all messages read from all clients connecting to the login account. This command may not be supported by the email server, in which case the server may return 0 or an error. ::pop3::retrieve chan startIndex ?endIndex? Retrieve a range of messages from the server. If the endIndex is not specified, only one message will be retrieved. The return value is a list containing each message as a separate element. See the startIndex and endIndex descriptions below. The retrieval mode determines how exactly messages are read from the server. The mode retr assumes that the RETR command delivers the size of the message as part of the command status and uses this to read the message efficiently. In mode list RETR does not deliver the size, but the LIST command does and we use this to retrieve the message size before the actual retrieval, which can then be done efficiently. In the last mode, slow, the system is unable to obtain the size of the message to retrieve in any manner and falls back to reading the message from the server line by line. It should also be noted that the system checks upon the configured mode and falls back to the slower modes if the above assumptions are not true. ::pop3::delete chan startIndex ?endIndex? Delete a range of messages from the server. If the endIndex is not specified, only one message will be deleted. Note, the indices are not reordered on the server, so if you delete message 1, then the first message in the queue is message 2 (message index 1 is no longer valid). See the startIndex and endIndex descriptions below. startIndex The startIndex may be an index of a specific message starting with the index 1, or it have any of the following values: start This is a logical value for the first message in the spool, equivalent to the value 1. next The message immediately following the last message read, see ::pop3::last. end The most recent message in the spool (the end of the spool). This is useful to retrieve only the most recent message. endIndex The endIndex is an optional parameter and defaults to the value "-1", which indicates to only retrieve the one message speci- fied by startIndex. If specified, it may be an index of a specific message starting with the index "1", or it may have any of the following values: last The message is the last message read by a POP3 client, see ::pop3::last. end The most recent message in the spool (the end of the spool). ::pop3::list chan ?msg? Returns the scan listing of the mailbox. If parameter msg is given, then the listing only for that message is returned. ::pop3::top chan msg n Optional POP3 command, not all servers may support this. ::pop3::top retrieves headers of a message, specified by parameter msg, and number of n lines from the message body. ::pop3::uidl chan ?msg? Optional POP3 command, not all servers may support this. ::pop3::uidl returns the uid listing of the mailbox. If the parameter msg is specified, then the listing only for that message is returned. ::pop3::close chan Gracefully close the connect after sending a POP3 QUIT command down the socket. BUGS, IDEAS, FEEDBACK This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category pop3 of the Tcllib SF Trackers [http://sourceforge.net/tracker/?group_id=12883]. Please also report any ideas for enhancements you may have for either package and/or documentation. KEYWORDS
email, mail, pop, pop3, rfc 1939 pop3 1.6.3 pop3(n)

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