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Procmail

 
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Old 05-19-2009
Procmail
Hi,

I have a few questions.

I am new to UNIX/Linux. At work I notice that our mail server uses sendmail. When I looked in the sendmail.cf file I see that it is using PROCMAIL as the Local Delivery Agent.

Questions:-
  1. I looked for /etc/procmail to see its configuration file but I see none. Is that normal?
    .
  2. And the main question I have is how does procmail know where to deliver the mail? We have users on two partitions after all!
    .
  3. When users loggin to this server to get email how does the email client know where to go?

I am fuzzy on understanding how mail systems work and could use some help.
Last edited by rbatte1; 07-05-2017 at 08:02 AM.. Reason: Set up formatted numbered lists
 
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LEARN ABOUT OSF1

aliases

aliases(4)						     Kernel Interfaces Manual							aliases(4)

NAME

       aliases - Contains alias definitions for the sendmail program

SYNOPSIS

       /var/adm/sendmail/aliases

DESCRIPTION

       By  default, the aliases file contains the required aliases for the sendmail program.  Do not delete these defaults because they are needed
       by the system.  This file describes user ID aliases used by the sendmail command.  It is formatted as a series of lines in the form:  name:
       name_1, name_2, name_3,..

       The  name is the name that needs an alias, and the name_n are the aliases for that name.  Lines beginning with white space are continuation
       lines.  Lines beginning with a # (number sign) are comments.

       You can define an alias only on local names. Duplicate addresses are removed and no message is sent to any  person  more  than  once.   For
       example, if name_1 defines an alias that is name_2 and name_2 defines an alias that is name_1, sendmail does not send the same message back
       and forth.  Local and valid recipients who have a .forward file in their home directory have  messages  forwarded  to  the  list  of  users
       defined in that file.

       This  is only the raw data file; the actual information that defines the aliases is placed into a binary format in the files /var/adm/send-
       mail/aliases.dir and /var/adm/sendmail/aliases.pag using the newaliases command.  For the change to take  effect,  the  newaliases  command
       must be executed each time the aliases file is changed.

       The  sendmail  program  also supports sending messages to programs or appending a message to a file. See the sendmail(8) reference page for
       further information.

   Special Aliases
       Directs error messages that occur when sending to aliasname back to address.

RESTRICTIONS

       Aliases for sendmail use the dbm(3) database format for faster lookups. A single alias cannot exceed 1,000 characters. To work around  this
       restriction, you can chain together aliases. For example: alias-list:  ali1, ali2, ali3 ali1: name 1, name 2 ...  ali2: name n, name n + 1

FILES

       Binary aliases file.  Binary aliases file.

RELATED INFORMATION

       Commands:  newaliases(1), forward(4), local.users(4), sendmail(8) delim off

																	aliases(4)