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Sendmail, 3rd Edition by Bryan Costales

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Delivery Agent F= Flags

In this section we detail each delivery agent flag. The complete list is shown in Table 20-19. They are presented in alphabetical order, where lowercase letters precede uppercase letters for each delivery agent flag.

When configuring with the mc technique, examine cf/README to determine which delivery agent flags are set by default for which delivery agents.

Table 20-19. Delivery agent F= flags

Flag

§

Meaning

%

F=%

Hold delivery until ETRN or -qI or -qR or -qS (V8.10 and above)

0

F=0 (zero)

Turn off MX lookups for delivery agent (V8.8 and above)

1

F=1 (one)

Don’t send null bytes (V8.10 and above)

2

F=2

Force SMTP even if ESMTP is offered (V8.12 and above)

3

F=3

Extend quoted-printable to EBCDIC (V8.7 and above)

5

F=5

Use the localaddr rule set 5 after local aliasing (V8.7 and above)

6

F=6

Always strip headers to 7 bits (V8.10 and above)

7

F=7

Strip the high bit when delivering (V8.6 and above)

8

F=8

Force EightBitMode=p MIME encoding (V8.7 and above)

9

F=9

Convert 7- to 8-bit if appropriate (V8.8 and above)

:

F=: (colon)

Check for :include: files (V8.7 and above)

|

F=| (vertical bar)

Check for |program addresses (V8.7 and above)

/

F=/ (forward slash)

Check for /file addresses (V8.7 and above)

@

F=@

User can be User Database key (V8.7 and above)

a

F=a

Run extended SMTP protocol (V8.6 and above)

A

F=A

User can be to the LHS of an alias (V8.7 and above)

b

F=b

Add a blank line after message (V8.6 and above) ...

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