- F=0
- Turns off MX lookups for this delivery agent (see §30.8.1).
- F=3
- Extends quoted-printable conversions to encode ASCII characters that cannot be represented in EBCDIC (see §30.8.2).
- F=5
- Uses rule set 5 after local aliasing (see §30.8.3).
- F=7
- Strips the high bit when delivering (see §30.8.4).
- F=8
- Forces
EightBitMode=p for this delivery agent (see §30.8.5).
- F=:
- Checks for
:include: files (see §30.8.7).
- F=|
- Checks for |program addresses (see §30.8.8).
- F=/
- Checks for /file addresses (see §30.8.9).
- F=@
- Allows users to be looked up in the User Database (see §30.8.10).
- F=a
- Runs the extended SMTP protocol (see §30.8.11).
- F=A
- Allows users to be in the LHS of an alias (see §30.8.12).
- F=b
- Ensures a blank line after message (see §30.8.13).
- F=c
- Excludes comment from $g in headers (see §30.8.14).
- F=C
- Adds @domain to recipient that lacks one (see §30.8.15). Applies to the sending delivery agent only.
- F=d
- Never encloses route addresses in <> (see §30.8.16).
- F=D
- Specifies the need for a
Date: header (see §30.8.17).
- F=e
- Marks this delivery agent as "expensive" (see §30.8.18).
- F=E
- Changes any extra lines that begin in "From" into ">From" (see §30.8.19).
- F=f
- Causes delivery agent to add -f to argv (see §30.8.20).
- F=F
- Specifies the need for a
From: header (see §30.8.21).
- F=g
- Suppresses sending of
From:<> senders in bounce messages (see §30.8.22).
- F=h
- Preserves uppercase in hostnames (see §30.8.23).
- F=i
- Specifies to perform a User Database rewrite on the envelope sender (see §30.8.24).
- F=I
- Causes delivery agent to send SMTP VERB to the other site (see §30.8.25).
- F=j
- Specifies to perform a User Database rewrite of header recipient addresses (see §30.8.26).
- F=k
- Suppresses check for loops in HELO command (see §30.8.27).
- F=l
- Specifies that delivery agent is local (final) delivery (see §30.8.28).
- F=L
- Causes SMTP line limits to be applied (obsolete, see §30.8.29).
- F=m
- Says that the delivery agent can deliver to multiple recipients at once (see §30.8.30).
- F=M
- Specifies the need for a
Message-ID: header (see §30.8.31).
- F=n
- Prevents the addition of a UNIX mailbox-style
From to headers (see §30.8.32).
- F=o
- Runs the delivery agent under the uid and gid of the recipient (see §30.8.33).
- F=p
- Attempts to process the return path correctly (deprecated, see §30.8.34).
- F=P
- Specifies the need for a
Return-Path: header (see §30.8.35).
- F=q
- Says to use a 252 instead of a 250 return code for an SMTP VRFY reply (see §30.8.36).
- F=r
- Causes the delivery agent to add a -r to argv (see §30.8.37).
- F=R
- Tells sendmail to use a reserved TCP port (see §30.8.38).
- F=s
- Causes quotation marks to be stripped from addresses (see §30.8.39).
- F=S
- Always run the delivery agent under a uid and gid specified (see §30.8.40).
- F=u
- Preserves uppercase for user names (see §30.8.41).
- F=U
- Prepends a UUCP-style
From line (see §30.8.42).
- F=w
- Verifies that the user is local by checking for an /etc/passwd entry (see §30.8.43).
- F=x
- Specifies that the delivery agent requires a
Full-Name: header (see §30.8.44).
- F=X
- Specifies that the delivery agent needs an RFC821 hidden dot (see §30.8.45).