postfix-master/UUCP_README.html

   1 <!doctype html public "-//W3C//DTD HTML 4.01 Transitional//EN"
   2         "http://www.w3.org/TR/html4/loose.dtd">
   3
   4 <html>
   5
   6 <head>
   7
   8 <title>Postfix and UUCP </title>
   9
  10 <meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
  11
  12 </head>
  13
  14 <body>
  15
  16 <h1><img src="postfix-logo.jpg" width="203" height="98" ALT="">Postfix and UUCP </h1>
  17
  18 <hr>
  19
  20 <h2><a name="uucp-tcp">Using UUCP over TCP</a></h2>
  21
  22 <p> Despite a serious lack of sex-appeal, email via UUCP over TCP
  23 is a practical option for sites without permanent Internet connections,
  24 and for sites without a fixed IP address. For first-hand information,
  25 see the following guides: </p>
  26
  27 <ul>
  28
  29 <li> Jim Seymour's guide for using UUCP over TCP at
  30 <a href="http://jimsun.LinxNet.com/jdp/uucp_over_tcp/index.html">http://jimsun.LinxNet.com/jdp/uucp_over_tcp/index.html</a>,
  31
  32 <li> Craig Sanders's guide for SSL-encrypted UUCP over TCP
  33 using stunnel at <a href="http://taz.net.au/postfix/uucp/">http://taz.net.au/postfix/uucp/</a>.
  34
  35 </ul>
  36
  37 Here's a graphical description of what this document is about:
  38
  39 <blockquote>
  40
  41 <table>
  42
  43 <tr> <td> Local network <tt> &lt;---&gt; </tt> </td>
  44
  45 <td bgcolor="#f0f0ff" align="center"><a href="#lan-uucp">LAN to<br>
  46 UUCP<br> Gateway</a></td>
  47
  48 <td> <tt> &lt;--- </tt> UUCP <tt> ---&gt; </tt> </td>
  49
  50 <td bgcolor="#f0f0ff" align="center"><a href="#internet-uucp">Internet<br>
  51 to UUCP<br> Gateway</a></td>
  52
  53 <td> <tt> &lt;---&gt; </tt>  Internet </td> </tr>
  54
  55 </table>
  56
  57 </blockquote>
  58
  59 <p> And here's the table of contents of this document: </p>
  60
  61 <ul>
  62
  63 <li><a href="#internet-uucp">Setting up a Postfix Internet to UUCP
  64 gateway</a>
  65
  66 <li><a href="#lan-uucp">Setting up a Postfix LAN to UUCP
  67 gateway</a>
  68
  69 </ul>
  70
  71 <h2><a name="internet-uucp">Setting up a Postfix Internet to UUCP
  72 gateway</a></h2>
  73
  74 <p> Here is how to set up a machine that sits on the Internet and
  75 that forwards mail to a LAN that is connected via UUCP. See
  76 the <a href="#lan-uucp">LAN to UUCP gateway</a> section for
  77 the other side of the story. </p>
  78
  79 <ul>
  80
  81 <li> <p> You need an <b>rmail</b> program that extracts the sender
  82 address from mail that arrives via UUCP, and that feeds the mail
  83 into the Postfix <b>sendmail</b> command.  Most UNIX systems come
  84 with an <b>rmail</b> utility. If you're in a pinch, try the one
  85 bundled with the Postfix source code in the <b>auxiliary/rmail</b>
  86 directory. </p>
  87
  88 <li> <p> Define a <a href="pipe.8.html">pipe(8)</a> based mail delivery transport for delivery
  89 via UUCP: </p>
  90
  91 <pre>
  92 /etc/postfix/<a href="master.5.html">master.cf</a>:
  93     uucp      unix  -       n       n       -       -       pipe
  94       flags=F user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient)
  95 </pre>
  96
  97 <p> This runs the <b>uux</b> command to place outgoing mail into
  98 the UUCP queue after replacing $nexthop by the next-hop hostname
  99 (the receiving UUCP host) and after replacing $recipient by the
 100 recipients.  The <a href="pipe.8.html">pipe(8)</a> delivery agent executes the <b>uux</b>
 101 command without assistance from the shell, so there are no problems
 102 with shell meta characters in command-line parameters.  </p>
 103
 104 <li> <p> Specify that mail for <i>example.com</i>, should be
 105 delivered via UUCP, to a host named <i>uucp-host</i>: </p>
 106
 107 <pre>
 108 /etc/postfix/transport:
 109     example.com     uucp:uucp-host
 110     .example.com    uucp:uucp-host
 111 </pre>
 112
 113 <p> See the <a href="transport.5.html">transport(5)</a> manual page for more details. </p>
 114
 115 <li> <p> Execute the command "<b>postmap /etc/postfix/transport</b>"
 116 whenever you change the <b>transport</b> file. </p>
 117
 118 <li> <p> Enable <b>transport</b> table lookups: </p>
 119
 120 <pre>
 121 /etc/postfix/<a href="postconf.5.html">main.cf</a>:
 122     <a href="postconf.5.html#transport_maps">transport_maps</a> = hash:/etc/postfix/transport
 123 </pre>
 124
 125 <p> Specify <b>dbm</b> instead of <b>hash</b> if your system uses
 126 <b>dbm</b> files instead of <b>db</b> files. To find out what map
 127 types Postfix supports, use the command "<b>postconf -m</b>". </p>
 128
 129 <li> <p> Add <i>example.com</i> to the list of domains that your site
 130 is willing to relay mail for. </p>
 131
 132 <pre>
 133 /etc/postfix/<a href="postconf.5.html">main.cf</a>:
 134     <a href="postconf.5.html#relay_domains">relay_domains</a> = example.com ...<i>other <a href="ADDRESS_CLASS_README.html#relay_domain_class">relay domains</a></i>...
 135 </pre>
 136
 137 <p> See the <a href="postconf.5.html#relay_domains">relay_domains</a> configuration parameter description for
 138 details. </p>
 139
 140 <li> <p> Execute the command "<b>postfix reload</b>" to make the
 141 changes effective. </p>
 142
 143 </ul>
 144
 145 <h2><a name="lan-uucp">Setting up a Postfix LAN to UUCP
 146 gateway</a></h2>
 147
 148 <p> Here is how to relay mail from a LAN via UUCP to the
 149 Internet. See the <a href="#internet-uucp">Internet to UUCP
 150 gateway</a> section for the other side of the story. </p>
 151
 152 <ul>
 153
 154 <li> <p> You need an <b>rmail</b> program that extracts the sender
 155 address from mail that arrives via UUCP, and that feeds the mail
 156 into the Postfix <b>sendmail</b> command.  Most UNIX systems come
 157 with an <b>rmail</b> utility. If you're in a pinch, try the one
 158 bundled with the Postfix source code in the <b>auxiliary/rmail</b>
 159 directory. </p>
 160
 161 <li> <p> Specify that all remote mail must be sent via the <b>uucp</b>
 162 mail transport to your UUCP gateway host, say, <i>uucp-gateway</i>: </p>
 163
 164 <pre>
 165 /etc/postfix/<a href="postconf.5.html">main.cf</a>:
 166     <a href="postconf.5.html#relayhost">relayhost</a> = uucp-gateway
 167     <a href="postconf.5.html#default_transport">default_transport</a> = uucp
 168 </pre>
 169
 170 <p> Postfix 2.0 and later also allows the following more succinct form: </p>
 171
 172 <pre>
 173 /etc/postfix/<a href="postconf.5.html">main.cf</a>:
 174     <a href="postconf.5.html#default_transport">default_transport</a> = uucp:uucp-gateway
 175 </pre>
 176
 177 <li> <p> Define a <a href="pipe.8.html">pipe(8)</a> based message delivery transport for mail
 178 delivery via UUCP: </p>
 179
 180 <pre>
 181 /etc/postfix/<a href="master.5.html">master.cf</a>:
 182     uucp      unix  -       n       n       -       -       pipe
 183       flags=F user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient)
 184 </pre>
 185
 186 <p> This runs the <b>uux</b> command to place outgoing mail into
 187 the UUCP queue. It substitutes the next-hop hostname (<i>uucp-gateway</i>,
 188 or whatever you specified) and the recipients before executing the
 189 command.  The <b>uux</b> command is executed without assistance
 190 from the shell, so there are no problems with shell meta characters.
 191 </p>
 192
 193 <li> <p> Execute the command "<b>postfix reload</b>" to make the
 194 changes effective. </p>
 195
 196 </ul>
 197
 198 </body>
 199
 200 </html>