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474 | Chapter 12: Maintain Aliases
Many sites have developed just such filters. One is distributed with the V8 sendmail
source in the file contrib/mmuegel. Written by Michael S. Muegel of Motorola??™s Corporate
Information Office, it is a shar(1) file of several useful perl(1) scripts. One
(postclip.pl) is a tool that filters out the body of bounced mail messages to prevent
postmasters from potentially violating the privacy of senders.* It tries to retain all
headers, regardless of how deeply they are buried in what appears to be the message
body.
12.4.2 RFC2142 Common Mailbox Names
The name postmaster is required by RFC2822 and all sites must accept mail to that
address. Another RFC, RFC2142, takes the concept of having a generalized
postmaster address one step further by recognizing other roles, such as abuse, info,
and marketing. For example, most web sites that sell products also accept email to
the address sales, which is now a frequently used, generalized email address.
Table 12-1 shows all the newly required addresses defined by RFC2142. Of these,
only postmaster is treated in a case-insensitive manner by sendmail.?? That is, mail to
postmaster, Postmaster, POSTMASTER, and PoStMaStEr will all be delivered to the
same person.
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