THE VIRTUAL SERVER HANDBOOK

Perhaps the most important difference between virtmaps and aliases is that

sendmail performs only a single database lookup in the

~/etc/virtmaps.db

 file when handling address mappings. The net

effect of this is that the right hand portion of an 

~/etc/virtmaps

 line

(the recipient portion) must not depend on the left hand portion (the address

portion) of any other line. The sendmail program does not lookup further

mappings to trace recipient addresses (unlike alias processing where

sendmail performs repeated alias lookups until it completely resolves the

recipient address).

Virtmaps Summarized

1.

If you have only one domain pointing to your virtual server then use of

the virtmaps file is not necessary.

2.

Address maps are stored in the 

~/etc/virtmaps

 file.

3.

After adding an address map to the 

virtmaps

 file generate the

virtmaps.db

 file with the 

vnewvirtmaps 

command

4.

Address maps follow a simple format:

address

recipient

i.e.:

webmaster@abc.com

john

5.

No colons in address maps and only one user on the right side. If

multiple recipients are needed on the right the specify the name of an

alias on the right hand side and then create the alias in the aliases file

with the multiple recipients.

6.

The catch all for a domain should be last.

COPYRIGHT 

 1999  DIGITAL TOOLS  LLC.

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