AuthMaxBits

The AuthMaxBits option limits the maximum encryption strength for STARTTLS and AUTH (V8.12 and later).

AuthMechanisms

The AuthMechanisms option lists acceptable AUTH mechanisms (V8.10 and later).

AuthOptions

The AuthOptions option tells sendmail when to issue the AUTH= extension to the MAIL FROM: command (V8.10 and later).

AutoRebuildAliases

The AutoRebuildAliases option has been eliminated (V8.12 and later).

BadRcptThrottle

The BadRcptThrottle option limits how many bad SMTP RCPT TO: commands are allowed before sendmail will slow its replies (V8.12 and later).

CACertFile

The CACertFile option defines the file that contains the certificates for CAs (V8.11 and later).

CACertPath

The CACertPath option specifies the directory that contains the certificate files for CAs (V8.11 and later).

ClientCertFile

The ClientCertFile option specifies the file that contains the client's certificate (V8.11 and later).

ClientKeyFile

The ClientKeyFile option specifies the file that contains the client's private key (V8.11 and later).

ClientPortOptions

The ClientPortOptions option tunes the client port option settings (V8.10 and later).

ConnectOnlyTo

The ConnectOnlyTo option specifies a host that should be connected to, no matter what (V8.10 and later).

ControlSocketName

The ControlSocketName option specifies the name and the location of the controlling socket (V8.10 and later).

See this section

V8.10 introduced the Modify= equate for the DaemonPortOptions option. Also V8.12 added the new A, O, and S Modify= equate values.

See this section

V8.10 introduced the Name= equate for the DaemonPortOptions option.

DataFileBufferSize

The DataFileBufferSize option limits the size to which the df file can grow before being flushed to disk (V8.10 and later).

DeadLetterDrop

The DeadLetterDrop option specifies the name and location of the systemwide dead.letter file (V8.10 and later).

DefaultAuthInfo

The DefaultAuthInfo option specifies the source of outgoing AUTH information (V8.10 to V8.11). This option was declared deprecated in V8.12. Its functionality has been replaced by the access database by means of the authinfo feature.

DelayLA

The DelayLA option adds a one-second SMTP sleep on high load (V8.12 and later).

DeliverByMin

The DeliverByMin option defines the default DELIVERBY interval (V8.12 and later).

DHParameters

The DHParameters option lists the file that contains the parameters for the DSA/DH cipher suite (V8.11 and later).

DirectSubmissionModifiers

The DirectSubmissionModifiers option lists the daemon flags for command-line submission (V8.12 and later).

DontBlameSendmail

The DontBlameSendmail option was added in V8.9 to prevent selected security checks, and was updated in later versions. V8.10 added three more items:

• NonRootSafeAddr

• TrustStickyBit

• DontWarnForwardFileInUnsafeDirPath

V8.11 added one new item: InsufficientEntropy. And V8.12 added several more items:

• GroupWritableForwardFile

• GroupWritableIncludeFile

• WorldWritableForwardFile

• WorldWritableIncludeFile

• GroupReadableKeyFile

• GroupReadableSASLDBFile

• GroupWritableSASLDBFile

• RunProgramInUnsafeDirPath

• RunWritableProgram

DontProbeInterfaces

The DontProbeInterfaces option prevents sendmail from probing interfaces to populate $=w (V8.9 and later).

FallbackMXhost

The FallbackMXhost option can now perform MX expansion of the specified hostname (V8.12 and later).

FastSplit

The FastSplit option suppresses MX lookups on initial submission, and limits the number of parallel queue processors following a split (V8.12 and later).

InputMailFilters

The InputMailFilters option gives order to the X configuration command's MILTER sockets (V8.12 and later).

LDAPDefaultSpec

The LDAPDefaultSpec option lists the default LDAP database-map switches (V8.10 and later).

MailboxDatabase

The MailboxDatabase option selects the type of a mailbox database to use (V8.12 and later).

MaxAliasRecursion

The MaxAliasRecursion option limits the maximum allowable recursion for aliases (V8.10 and later).

MaxHeadersLength

The MaxHeadersLength option limits the maximum allowable header length (V8.10 and later).

MaxMimeHeaderLength

The MaxMimeHeaderLength option limits the maximum allowable MIME header length (V8.10 and later).

MaxQueueChildren

The MaxQueueChildren option limits the number of concurrent queue processors (V8.12 and later).

MaxRecipientsPerMessage

The MaxRecipientsPerMessage option limits the maximum number of recipients allowed per envelope (V8.9 and later).

MaxRunnersPerQueue

The MaxRunnersPerQueue option limits the maximum number of concurrent queue processors per queue group (V8.12 and later).

Milter

The Milter option tunes interactions with the various MILTER programs (V8.12 and later).

NiceQueueRun

The NiceQueueRun option defines the default nice(3) settings to be used by queue processors (V8.12 and later).

PidFile

The PidFile option defines the name and location to be used for the sendmail pid file (V8.10 and later).

See this section

The nobodyreturn keyword for the PrivacyOptions option suppresses honoring the RET=full SMTP extension (V8.10 and later).

See this section

The restrictexpand keyword for the PrivacyOptions option causes sendmail to drop its special privileges when the -bv switch is specified by a user who is neither root nor a trusted user (V8.12 and later).

ProcessTitlePrefix

The ProcessTitlePrefix option defines the prefix to be used for process listings (V8.10 and later).

QueueFileMode

The QueueFileMode option specifies the default permissions for queue files (V8.12 and later).

See this section

The ability to sort by filename was added to the QueueSortOrder option (V8.10 and later). The ability to sort by modification time (Modtime) was added to the QueueSortOrder option (V8.12 and above).

See this section

The ability to randomize the list was added to the QueueSortOrder option (V8.12 and later).

RandFile

The RandFile option defines the source for random numbers (V8.11 and later).

ResolverOptions

The WorkAroundBrokenAAAA setting was added to the ResolverOptions option (V8.12 and later).

RrtImpliesDsn

The RrtImpliesDsn option causes the Return-Receipt-To: header to set the NOTIFY=SUCCESS SMTP extension (V8.10 and later).

ServerCertFile

The ServerCertFile option specifies the name and location of the file containing the server's certificate (V8.11 and later).

ServerKeyFile

The ServerKeyFile option specifies the name and location of the file containing the server certificate's private key (V8.11 and later).

SharedMemoryKey

The SharedMemoryKey option enables the use of shared memory (V8.12 and later).

SuperSafe

The interactive mode was added to the SuperSafe option to skip unneeded secondary synchronization calls (V8.12 and later).

See this section

The aconnect timeout was added to the Timeout option (V8.12 and later).

See this section

The auth timeout was added to the Timeout option (V8.12 and later).

See this section

The control timeout was added to the Timeout option (V8.10 and later).

See this section

The lhlo timeout was added to the Timeout option (V8.12 and later).

See this section

The resolver timeout was added to the Timeout option (V8.10 and later).

See this section

The starttls timeout was added to the Timeout option (V8.12 and later).

TLSSrvOptions

The TLSSrvOptions option tunes the server's TLS setting (V8.12 and later).

TrustedUser

The TrustedUser option specifies an alternative to root for routine administration (V8.10 and later).

UseMSP

The UseMSP option causes sendmail to run as a mail submission program (V8.12 and later).

XscriptFileBufferSize

The XscriptFileBufferSize option sets the xf file's buffered I/O size (V8.10 and later).