Mail server using POP3

Operating Systems Linux Red Hat Mail server using POP3

03-18-2011

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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?

shakshakshuk

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mail::transport::pop3

Mail::Transport::POP3(3pm)				User Contributed Perl Documentation				Mail::Transport::POP3(3pm)

NAME

       Mail::Transport::POP3 - receive messages via POP3

INHERITANCE

	Mail::Transport::POP3
	  is a Mail::Transport::Receive
	  is a Mail::Transport
	  is a Mail::Reporter

SYNOPSIS

	my $receiver = Mail::Transport::POP3->new(...);
	my $message = $receiver->receive($id);

DESCRIPTION

       Receive messages via the POP3 protocol from one remote server, as specified in rfc1939.	This object hides much of the complications in the
       protocol and recovers broken connections automatically.	Although it is part of the MailBox distribution, this object can be used
       separately.

       You probably should not use this module, but Mail::Box::POP3.  This module is the interface to POP3, whereas Mail::Box::POP3 hides the
       protocol weirdness and works as any other mail folder.

METHODS

   Constructors
       Mail::Transport::POP3->new(OPTIONS)
	   Create a new pop3 server connection.  One object can only handle one connection: for a single user to one single server.  If the server
	   could not be reached, or when the login fails, this instantiating "new" will return "undef".

	    -Option	 --Defined in	  --Default
	     authenticate		    'AUTO'
	     executable    Mail::Transport  undef
	     hostname	   Mail::Transport  'localhost'
	     interval	   Mail::Transport  30
	     log	   Mail::Reporter   'WARNINGS'
	     password	   Mail::Transport  undef
	     port	   Mail::Transport  110
	     proxy	   Mail::Transport  undef
	     retry	   Mail::Transport  <false>
	     timeout	   Mail::Transport  120
	     trace	   Mail::Reporter   'WARNINGS'
	     use_ssl			    <false>
	     username	   Mail::Transport  undef
	     via	   Mail::Transport  'sendmail'

	   authenticate => 'LOGIN'|'APOP'|'AUTO'
	     Authenthication method.  The standard defines two methods, named LOGIN and APOP.  The first sends the username and password in plain
	     text to the server to get permission, the latter encrypts this data using MD5.  When AUTO is used, first APOP is tried, and then
	     LOGIN.

	   executable => FILENAME
	   hostname => HOSTNAME|ARRAY-OF-HOSTNAMES
	   interval => SECONDS
	   log => LEVEL
	   password => STRING
	   port => INTEGER
	   proxy => PATH
	   retry => NUMBER|undef
	   timeout => SECONDS
	   trace => LEVEL
	   use_ssl => BOOLEAN
	   username => STRING
	   via => CLASS|NAME

   Receiving mail
       $obj->receive([UNIQUE-MESSAGE-ID])
	   See "Receiving mail" in Mail::Transport::Receive

   Exchanging information
       $obj->deleteFetched()
	   Mark all messages that have been fetched with message() for deletion.  See fetched().

       $obj->deleted(BOOLEAN, ID's)
	   Either mark the specified message(s) to be deleted on the remote server or unmark them for deletion (if the first parameter is false).
	   Deletion of messages will take place only when the connection is specifically disconnected or the last reference to the object goes out
	   of scope.

       $obj->disconnect()
	   Break contact with the server, if that (still) exists.  Returns true if successful.	Please note that even if the disconnect was not
	   successful, all knowledge of messages etc. will be removed from the object: the object basically has reverted to the state in which it
	   was before anything was done with the mail box.

       $obj->fetched()
	   Returns a reference to a list of ID's that have been fetched using message().  This can be used to update a database of messages that
	   were fetched (but maybe not yet deleted) from the mailbox.

	   Please note that if the POP3 server did not support the UIDL command, this method will always return undef because it is not possibly
	   to reliably identify messages between sessions (other than looking at the contents of the messages themselves).

	   See also deleteFetched().

       $obj->folderSize()
	   Returns the total number of octets used by the mailbox on the remote server.

       $obj->header(ID, [BODYLINES])
	   Returns a reference to an array which contains the header of the message with the specified ID.  "undef" is returned if something has
	   gone wrong.

	   The optional integer BODYLINES specifies the number of lines from the body which should be added, by default none.

	   example:

	    my $ref_lines = $pop3->header($uidl);
	    print @$ref_lines;

       $obj->id2n(ID)
	   Translates the unique ID of a message into a sequence number which represents the message as long a this connection to the POP3 server
	   exists.  When the message has been deleted for some reason, "undef" is returned.

       $obj->ids()
	   Returns a list (in list context) or a reference to a list (in scalar context) of all ID's which are known by the server on this moment.

       $obj->message(ID)
	   Returns a reference to an array which contains the lines of the message with the specified ID.  Returns "undef" if something has gone
	   wrong.

	   example:

	    my $ref_lines = $pop3->message($uidl);
	    print @$ref_lines;

       $obj->messageSize(ID)
	   Returns the size of the message which is indicated by the ID, in octets.  If the message has been deleted on the remote server, this
	   will return "undef".

       $obj->messages()
	   Returns (in scalar context only) the number of messages that are known to exist in the mailbox.

   Protocol internals
       The follow methods handle protocol internals, and should not be used by a normal user of this class.

       $obj->login()
	   Establish a new connection to the POP3 server, using username and password.

       $obj->send(SOCKET, data)
	   Send data to the indicated socket and return the first line read from that socket.  Logs an error if either writing to or reading from
	   socket failed.

	   This method does not attempt to reconnect or anything: if reading or writing the socket fails, something is very definitely wrong.

       $obj->sendList(SOCKET, COMMAND)
	   Sends the indicated COMMAND to the specified socket, and retrieves the response.  It returns a reference to an array with all the lines
	   that were reveived after the first "+OK" line and before the end-of-message delimiter (a single dot on a line).  Returns "undef"
	   whenever something has gone wrong.

       $obj->socket()
	   Returns a connection to the POP3 server.  If there was no connection yet, it will be created transparently.	If the connection with the
	   POP3 server was lost, it will be reconnected and the assures that internal state information (STAT and UIDL) is up-to-date in the
	   object.

	   If the contact to the server was still present, or could be established, an IO::Socket::INET object is returned.  Else, "undef" is
	   returned and no further actions should be tried on the object.

       $obj->status(SOCKET)
	   Update the current status of folder on the remote POP3 server.

   Server connection
       $obj->findBinary(NAME [, DIRECTORIES])
	   See "Server connection" in Mail::Transport

       $obj->remoteHost()
	   See "Server connection" in Mail::Transport

       $obj->retry()
	   See "Server connection" in Mail::Transport

       $obj->url()
	   Represent this pop3 connection as URL.

   Error handling
       $obj->AUTOLOAD()
	   See "Error handling" in Mail::Reporter

       $obj->addReport(OBJECT)
	   See "Error handling" in Mail::Reporter

       $obj->defaultTrace([LEVEL]|[LOGLEVEL, TRACELEVEL]|[LEVEL, CALLBACK])
       Mail::Transport::POP3->defaultTrace([LEVEL]|[LOGLEVEL, TRACELEVEL]|[LEVEL, CALLBACK])
	   See "Error handling" in Mail::Reporter

       $obj->errors()
	   See "Error handling" in Mail::Reporter

       $obj->log([LEVEL [,STRINGS]])
       Mail::Transport::POP3->log([LEVEL [,STRINGS]])
	   See "Error handling" in Mail::Reporter

       $obj->logPriority(LEVEL)
       Mail::Transport::POP3->logPriority(LEVEL)
	   See "Error handling" in Mail::Reporter

       $obj->logSettings()
	   See "Error handling" in Mail::Reporter

       $obj->notImplemented()
	   See "Error handling" in Mail::Reporter

       $obj->report([LEVEL])
	   See "Error handling" in Mail::Reporter

       $obj->reportAll([LEVEL])
	   See "Error handling" in Mail::Reporter

       $obj->trace([LEVEL])
	   See "Error handling" in Mail::Reporter

       $obj->warnings()
	   See "Error handling" in Mail::Reporter

   Cleanup
       $obj->DESTROY()
	   See "Cleanup" in Mail::Reporter

       $obj->inGlobalDestruction()
	   See "Cleanup" in Mail::Reporter

DIAGNOSTICS

       Error: Cannot connect to $host:$port for POP3: $!
	   Unsuccesful in connecting to the remote POP3 server.

       Error: Cannot get the messages of pop3 via messages()
	   It is not possible to retreive all messages on a remote POP3 folder at once: each shall be taken separately.  The POP3 folder will hide
	   this for you.

       Error: Cannot re-connect reliably to server which doesn't support UIDL.
	   The connection to the remote POP3 was lost, and cannot be re-established because the server's protocol implementation lacks the
	   necessary information.

       Error: Cannot read POP3 from socket: $!
	   It is not possible to read the success status of the previously given POP3 command.	Connection lost?

       Error: Cannot write POP3 to socket: $@
	   It is not possible to send a protocol command to the POP3 server.  Connection lost?

       Error: Could not authenticate using '$some' method.
	   The authenication method to get access to the POP3 server did not result in a connection.  Maybe you need a different authentication
	   protocol, or your username with password are invalid.

       Error: Could not authenticate using any login method.
	   No authentication method was explicitly prescribed, so both AUTH and APOP were tried.  However, both failed.  There are other
	   authentication methods, which are not defined by the main POP3 RFC rfc1939.	These protocols are not implemented yet.  Please
	   contribute your implementation.

       Error: POP3 Could not do a STAT
	   For some weird reason, the server does not respond to the STAT call.

       Error: POP3 requires a username and password.
	   No username and/or no password specified for this POP3 folder, although these are obligatory parts in the protocol.

       Error: Package $package does not implement $method.
	   Fatal error: the specific package (or one of its superclasses) does not implement this method where it should. This message means that
	   some other related classes do implement this method however the class at hand does not.  Probably you should investigate this and
	   probably inform the author of the package.

       Error: Server at $host:$port does not seem to be talking POP3.
	   The remote server did not respond to an initial exchange of messages as is expected by the POP3 protocol.  The server has probably a
	   different service on the specified port.

SEE ALSO

       This module is part of Mail-Box distribution version 2.105, built on May 07, 2012. Website: http://perl.overmeer.net/mailbox/

LICENSE

       Copyrights 2001-2012 by [Mark Overmeer]. For other contributors see ChangeLog.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.  See
       http://www.perl.com/perl/misc/Artistic.html

perl v5.14.2							    2012-05-07						Mail::Transport::POP3(3pm)

Red Hat