Sendmail Installation and Operation Guide
SMM:08-67
needed.
ErrorHeader=file-or-message
[E] Prepend error messages with the indicated message. If it begins with a slash,
it is assumed to be the pathname of a file containing a message (this is the recom-
mended setting). Otherwise, it is a literal message. The error file might contain
the name, email address, and/or phone number of a local postmaster who could
provide assistance to end users. If the option is missing or null, or if it names a
file which does not exist or which is not readable, no message is printed.
ErrorMode=x
[e] Dispose of errors using mode x. The values for x are:
p
Print error messages (default)
q
No messages, just give exit status
m
Mail back errors
w
Write back errors (mail if user not logged in)
e
Mail back errors (when applicable) and give zero exit stat always
Note that the last mode, "e", is for Berknet error processing and should not be
used in normal circumstances. Note, too, that mode "q", only applies to errors
recognized before sendmail forks for background delivery.
FallbackMXhost=fallbackhost
[V] If specified, the fallbackhost acts like a very low priority MX on every host.
MX records will be looked up for this host, unless the name is surrounded by
square brackets. This is intended to be used by sites with poor network connectiv-
ity. Messages which are undeliverable due to temporary address failures (e.g.,
DNS failure) also go to the FallbackMXhost.
FallBackSmartHost=hostname
If specified, the FallBackSmartHost will be used in a last-ditch effort for each
host. This is intended to be used by sites with "fake internal DNS", e.g., a com-
pany whose DNS accurately reflects the world inside that company's domain but
not outside.
FastSplit
[no short name] If set to a value greater than zero (the default is one), it sup-
presses the MX lookups on addresses when they are initially sorted, i.e., for the
first delivery attempt. This usually results in faster envelope splitting unless the
MX records are readily available in a local DNS cache. To enforce initial sorting
based on MX records set FastSplit to zero. If the mail is submitted directly from
the command line, then the value also limits the number of processes to deliver
the envelopes; if more envelopes are created they are only queued up and must be
taken care of by a queue run. Since the default submission method is via SMTP
(either from a MUA or via the MSP), the value of FastSplit is seldom used to
limit the number of processes to deliver the envelopes.
ForkEachJob
[Y] If set, deliver each job that is run from the queue in a separate process.
ForwardPath=path
[J] Set the path for searching for users' .forward files. The default is "$z/.for-
ward". Some sites that use the automounter may prefer to change this to
"/var/forward/$u" to search a file with the same name as the user in a system
directory. It can also be set to a sequence of paths separated by colons; sendmail
stops at the first file it can successfully and safely open. For example, "/var/for-
ward/$u:$z/.forward" will search first in /var/forward/username and then in ~user-
name/.forward (but only if the first file does not exist).
HelpFile=file
[H] Specify the help file for SMTP. If no file name is specified, "helpfile" is used.