summaryrefslogtreecommitdiff
path: root/gnu/dist/postfix/html/canonical.5.html
blob: fdfc525b65bcecc54a8266b06ca798cd4cffa6eb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
<html> <head> </head> <body> <pre>



CANONICAL(5)                                         CANONICAL(5)


<b>NAME</b>
       canonical - format of Postfix canonical table

<b>SYNOPSIS</b>
       <b>postmap</b> <b>/etc/postfix/canonical</b>

<b>DESCRIPTION</b>
       The  optional  <b>canonical</b> file specifies an address mapping
       for local and non-local addresses. The mapping is used  by
       the  <a href="cleanup.8.html"><b>cleanup</b>(8)</a> daemon.  The address mapping is recursive.

       The file serves as input to the  <a href="postmap.1.html"><b>postmap</b>(1)</a>  command.  The
       result,  an  indexed file in <b>dbm</b> or <b>db</b> format, is used for
       fast searching by the mail system. After an update it  may
       take  a  minute  or  so before the change becomes visible.
       Issue a <b>postfix</b> <b>reload</b> command to eliminate the delay.

       The  <b>canonical</b>  mapping  affects   both   message   header
       addresses (i.e. addresses that appear inside messages) and
       message envelope addresses  (for  example,  the  addresses
       that  are  used in SMTP protocol commands). Think Sendmail
       rule set <b>S3</b>, if you like.

       Typically, one would use the <b>canonical</b>  table  to  replace
       login   names   by  <i>Firstname.Lastname</i>,  or  to  clean  up
       addresses produced by legacy mail systems.

       The <b>canonical</b> mapping is not to be confused  with  <i>virtual</i>
       <i>domain</i> support. Use the <a href="virtual.5.html"><b>virtual</b>(5)</a> map for that purpose.

       The  <b>canonical</b>  mapping  is  not to be confused with local
       aliasing.  Use the <a href="aliases.5.html"><b>aliases</b>(5)</a> map for that purpose.

       The format of the <b>canonical</b> table is as follows,  mappings
       being tried in the order as listed in this manual page:

       blanks and comments
              Blank  lines  are  ignored,  as are lines beginning
              with `#'.

       <i>user</i>@<i>domain</i> <i>address</i>
              <i>user</i>@<i>domain</i> is replaced by <i>address</i>. This  form  has
              the highest precedence.

              This  form useful to clean up addresses produced by
              legacy mail systems.  It can also be used  to  pro-
              duce  <i>Firstname.Lastname</i>  style  addresses, but see
              below for a simpler solution.

       <i>user</i> <i>address</i>
              <i>user</i>@<i>site</i> is replaced by <i>address</i> when <i>site</i> is equal
              to  $<b>myorigin</b>,  when  <i>site</i> is listed in $<b>mydestina-</b>
              <b>tion</b>, or when it is listed in $<b>inet</b><i>_</i><b>interfaces</b>.




                                                                1





CANONICAL(5)                                         CANONICAL(5)


              This form is useful for replacing  login  names  by
              <i>Firstname.Lastname</i>.

       @<i>domain</i> <i>address</i>
              Every  address  in  <i>domain</i>  is replaced by <i>address</i>.
              This form has the lowest precedence.

       In all the above forms, when <i>address</i> has the form  @<i>other-</i>
       <i>domain</i>, the result is the same user in <i>otherdomain</i>.

<b>ADDRESS</b> <b>EXTENSION</b>
       When  table  lookup  fails, and the address localpart con-
       tains   the   optional    recipient    delimiter    (e.g.,
       <i>user+foo</i>@<i>domain</i>),  the  search  is  repeated for the unex-
       tended address  (e.g.   <i>user</i>@<i>domain</i>),  and  the  unmatched
       extension is propagated to the result of table lookup. The
       matching order is: <i>user+foo</i>@<i>domain</i>, <i>user</i>@<i>domain</i>, <i>user+foo</i>,
       <i>user</i>, and @<i>domain</i>.

<b>BUGS</b>
       The  table format does not understand quoting conventions.

<b>CONFIGURATION</b> <b>PARAMETERS</b>
       The following <b>main.cf</b> parameters are  especially  relevant
       to  this  topic.  See  the Postfix <b>main.cf</b> file for syntax
       details and for default values.  Use  the  <b>postfix</b>  <b>reload</b>
       command after a configuration change.

       <b>canonical</b><i>_</i><b>maps</b>
              List of canonical mapping tables.

       <b>recipient</b><i>_</i><b>canonical</b><i>_</i><b>maps</b>
              Address  mapping  lookup  table  for  envelope  and
              header recipient addresses.

       <b>sender</b><i>_</i><b>canonical</b><i>_</i><b>maps</b>
              Address  mapping  lookup  table  for  envelope  and
              header sender addresses.

       Other parameters of interest:

       <b>inet</b><i>_</i><b>interfaces</b>
              The  network  interface  addresses that this system
              receives mail on.

       <b>masquerade</b><i>_</i><b>domains</b>
              List of domains that hide  their  subdomain  struc-
              ture.

       <b>masquerade</b><i>_</i><b>exceptions</b>
              List  of user names that are not subject to address
              masquerading.





                                                                2





CANONICAL(5)                                         CANONICAL(5)


       <b>mydestination</b>
              List of domains that  this  mail  system  considers
              local.

       <b>myorigin</b>
              The domain that is appended to locally-posted mail.

       <b>owner</b><i>_</i><b>request</b><i>_</i><b>special</b>
              Give special treatment to <b>owner-</b><i>xxx</i> and <i>xxx</i><b>-request</b>
              addresses.

<b>SEE</b> <b>ALSO</b>
       <a href="cleanup.8.html">cleanup(8)</a> canonicalize and enqueue mail
       <a href="postmap.1.html">postmap(1)</a> create mapping table
       <a href="virtual.5.html">virtual(5)</a> virtual domain mapping

<b>LICENSE</b>
       The  Secure  Mailer  license must be distributed with this
       software.

<b>AUTHOR(S)</b>
       Wietse Venema
       IBM T.J. Watson Research
       P.O. Box 704
       Yorktown Heights, NY 10598, USA
































                                                                3


</pre> </body> </html>