<header>Address mapping lookup tables</header>
<center><tt>canonical_maps</tt></center>
<hr>
This parameter specifies optional address mapping lookup tables. The mapping is
applied to both sender and recipient addresses, in both envelopes and in
headers. This is typically used to clean up dirty addresses from legacy mail
systems, or to replace login names by <tt>Firstname.Lastname</tt>. See
<a href=canonical>Canonical Mapping</a> for details.
<p>
By default, no canonical address mapping is done.
<p>
Sensible possible values:
<ul>
<li> <tt>dbm:/etc/postfix/canonical</tt>
<li> <tt>hash:/etc/postfix/canonical</tt>
<li> <tt>hash:/etc/postfix/canonical, nis:canonical</tt>
<li> <tt>hash:/etc/postfix/canonical, netinfo:/canonical</tt>
</ul>
<hr>
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