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1 .\" @(MHWARNING)
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2 .\" @(#)$Id$
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3 .SC POPD 8
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4 .NA
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5 popd \- the POP server
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6 .SY
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7 /usr/etc/popd
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8 \%[\-p\ portno]
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9 (under /etc/rc.local)
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10 .DE
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11 The \fIpopd\fR server implements the Post Office Protocol (version 3),
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12 as described in RFC1081 and RFC1082.
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13 Basically, the server listens on the TCP port named \*(lqpop\*(rq
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14 for connections and enters the
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15 POP upon establishing a connection.
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16 The `\-p' option overrides the default TCP port.
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17 .PP
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18 If the POP2 configuration option is defined,
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19 then the server also implements version 2 of the protocol.
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20 .PP
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21 If the APOP configuration option is defined,
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22 then the server supports a non-standard mechanism for identity-establishment
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23 in which authentication credentials are used to provide for origin
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24 authentication and reply protection,
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25 but which do not involve sending a password in the clear over the network.
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26 See \fIpopauth\fR(8) for more details.
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27 .Fi
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28 ^/usr/spool/pop/POP~^POP database
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29 .Pr
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30 None
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31 .Sa
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32 \fIPost Office Protocol - version 3\fR (aka RFC\-1081),
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33 .br
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34 \fIPost Office Protocol - version 3: Extended service offerings\fP
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35 (RFC\-1082),
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36 .br
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37 pop(5)
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38 .De
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39 None
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40 .Co
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41 None
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42 .Hi
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43 For historical reasons, the \fIMH\fP POP defaults to using
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44 the port named \*(lqpop\*(rq (109) instead of its newly assigned
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45 port named \*(lqpop3\*(rq (110).
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46 See the POPSERVICE configuration option for more details.
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47 .sp
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48 Previous versions of the server (10/28/84) had the restriction that
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49 the POP client may retrieve messages for login users only.
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50 This restriction has been lifted,
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51 and true POB support is available
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52 (sending mail to a mailbox on the POP service host
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53 which does not map to a user\-id in the password file).
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54 .En
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