HP-UX Mailing Services Administrator's Guide (B2355-91064)

of a mailing list, it looks for an alias of the form owner-mailing_list and sends the
error message to the owner. For example, if mike were responsible for maintaining
the chess_club mailing list, he could be configured as the owner:
chess_club: [e-mail], marie@buffalo,
bigvax!amlabs!denise, [e-mail]
owner-chess_club: [e-mail]
Any errors that Sendmail encounters while trying to deliver mail to the members of
the chess_club mailing list would be reported to mike.
Avoiding Alias Loops
You must avoid creating aliasing loops. Loops can occur either locally or remotely. An
example of a local alias loop is as follows:
#Example of a local alias loop
first : second
second : first
While regenerating the alias database, the newaliases command does not notice a
loop like the one shown in the previous example. However, after the alias database is
generated, mail addressed to either first or second is not sent. If the recipients for
the message are only in the local alias loops, the message is returned with the error
message All recipients suppressed.
In the previous example, if mail is addressed to first, first expands to second,
which expands back to first. This causes Sendmail to remove first from the recipient
list as a duplicate.
# Example alias entry on host sage
dave : dave@basil
# Example alias entry on host basil
dave : dave@sage
The following is an example of a remote aliasing loop:
Creating Sendmail Aliases 63