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F configuration command  2nd  3rd  4th 
    file form 
    program form 
f delivery agent flag  2nd 
F delivery agent flag 
F line (qf file)  2nd 
F= delivery agent equate 
F= queue-group equate 
F=... delivery agent flags 
facility, mail-handling program 
FallbackMXhost option 
FAST_PID_RECYCLE compile-time macro 
fax delivery agent 
fax machines, delivery via 
FAX_RELAY m4 macro 
FAX_RELAY mc macro 
FEATURE (queuegroup) 
FEATURE( ) m4 macro 
fgetfolded routine 
file class macros 
file descriptors, maximize limits of 
File Transfer Protocol (FTP)
    BIND, obtaining via 
    source code, obtaining via 
files
    appending  [See appending to files]
    delivery to  2nd 
    F configuration command 
    location of, sendmail options for 
    mailbox  [See mailbox file]
    of masquerading domains 
    moved to /etc/mail 
    output, can't write to 
filesystem hierarchy 
filter programs  2nd 
final rule set 
fingerd daemon 
forged mail messages 
FORK compile-time macro 
forking 
format of sender's address 
forwarding loops 
forwarding mail messages, Resent- headers for 
ForwardPath option 
FQDNs (fully qualified domain names) 
    trailing dot for 
freezing sendmail.cf configuration file 
Frey, Donnalyn 
From: header line  [See also trusted users]2nd  3rd  4th 
    F=E delivery agent flag and 
    F=F delivery agent flag and 
    F=n delivery agent flag and 
    F=U delivery agent flag and 
    removing/recreating 
from= equate (syslog output) 
FTP (File Transfer Protocol)
    BIND, obtaining via 
    source code, obtaining via 
full name of sender 
Full-Name: header line  2nd 
fully qualified domain names (FQDNs) 
    trailing dot for 
fully qualified hostnames  2nd 
fuzzy name matching