If file is omitted, the name of the help file
defaults to helpfile. If the entire option is omitted, the name of the help file is undefined.
The default for the mc configuration technique is /etc/mail/helpfile. SMTP is described in
RFC2821, and ESMTP is described in RFC1869.
The HelpFile option is not safe. If specified from the command line, it can cause sendmail
to relinquish its special privileges.
24.9.55 HoldExpensive
Queue for expensive mailers All versions
An expensive mailer is a delivery agent that contains an e flag in its F= equate (?§20.8.23 on
page 770). Typically, suchdelivery agents are associated withslow network connections
suchas SL/IP, or withcostly networks suchas those withh ighper-connect or connection
startup rates. Whatever the reason, the HoldExpensive option allows you to queue all such
mail for later delivery rather than connecting on demand. (Queuing is described in
Chapter 11 on page 394.)
Note that this option affects only the initial delivery attempt, not later attempts when the
queue is processed. Essentially, all this option does is to defer delivery until the next time
the queue is processed.
The forms of the HoldExpensive option are as follows:
O HoldExpensive=bool ?†? configuration file (V8.7 and later)
-OHoldExpensive=bool ?†? command line (V8.7 and later)
define(`confCON_EXPENSIVE??,bool) ?†? mc configuration (V8.
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