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Improved "Sendmail" System Management Functions

IP.com Disclosure Number: IPCOM000034171D
Original Publication Date: 1989-Jan-01
Included in the Prior Art Database: 2005-Jan-26
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Murrah, CB: AUTHOR

Abstract

A method is described to permit the AIX* operating system "sendmail" system management functions to avoid possible user synchronization problems with the "alias" and "freeze" files and to restrict system management functions to users who are authorized to run as either root or as a member of the system group. The following changes in sendmail's system management functions are made by the new method. The sendmail maintains two files that can be updated by users: an alias file and a freeze file. The alias file relates local user nicknames to lengthier mail addresses. This permits users to enter nicknames for users and/or addresses that they frequently reference. The freeze file is effectively a compiled version of the ascii configuration file that sendmail uses to control basic mail processing.

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Improved "Sendmail" System Management Functions

A method is described to permit the AIX* operating system "sendmail" system management functions to avoid possible user synchronization problems with the "alias" and "freeze" files and to restrict system management functions to users who are authorized to run as either root or as a member of the system group. The following changes in sendmail's system management functions are made by the new method. The sendmail maintains two files that can be updated by users: an alias file and a freeze file. The alias file relates local user nicknames to lengthier mail addresses. This permits users to enter nicknames for users and/or addresses that they frequently reference. The freeze file is effectively a compiled version of the ascii configuration file that sendmail uses to control basic mail processing. Since sendmail has to interpret the configuration file, the purpose of the frozen configuration file is to provide a faster interpretation of the configuration data. Current version of sendmail permit these files to be updated at any time. That is, there is no synchronization of the data changes with whatever current use is being made of the files by sendmail. This implies that there is a small window where errors could occur because the changes may be incompatible with another sendmail process that is currently active. The AIX version of sendmail has been modified by the new method to remove this small window where synchroniza...