10 and later)
The user is either a user login name (in which case it will be looked up with the appropriate
passwd technique), or an integer (in which case it will be used as is as the uid for this
user). If the user is an unknown or is omitted, an error will result:
readcf: option TrustedUser: unknown user bad name
There is no default for this option, and the mc configuration technique leaves it undefined
by default. See ?§4.8.2.3 on page 176 for a more complete discussion of this option.
The TrustedUser option is not safe. If it is specified from the command line, it can cause
sendmail to relinquish its special privileges.
24.9.123 TryNullMXList
If no best MX record, use A or AAAA V8.1 and later
RFC974 says that when mail is being sent from a host that is an MX record for the
receiving host, all MX records of a preference equal to or greater than the sending host
must be discarded. In some circumstances, this can leave no usable MX records, and if that
is the case, V8 sendmail bases its action on the setting of its TryNullMXList option.
The forms of the TryNullMXList option are as follows:
O TryNullMXList=bool ?†? configuration file (V8.7 and later)
-OTryNullMXList=bool ?†? command line (V8.7 and later)
define(`confTRY_NULL_MX_LIST??,bool) ?†? mc configuration (V8.7 and later)
Owbool ?†? configuration file (deprecated)
-owbool ?†? command line (deprecated)
The bool is of type Boolean.
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