local file, 65
${rcpt_addr} defined sendmail macro, 842
${rcpt_host} defined sendmail macro, 843
${rcpt_mailer} defined sendmail macro, 843
README files, 46, 51
RealHostAddr variable, 1252
RealHostName variable, 1252
rebuild aliases mode (-bi switch), 22
This is the Title of the Book, eMatter Edition
Copyright ?© 2007 O??™Reilly & Associates, Inc. All rights reserved.
Index | 1275
Received: header, 1162
validity checking, 266
recipient addresses, 226
handling by rule set 2, 702
RecipientFactor option, 1077
recipients, verification prior to delivery, 237
References: header, 1164
RefuseLA option, 1078
regex database-map type, 932??“935
regex library, 104
regular expression maps, using, 125
RejectionLogInterval option, 1079
relay delivery agent, 731, 733
RELAY_DOMAIN macro, 269
RELAY_DOMAIN_FILE mc macro, 269
relaying, 267??“277
FEATURE(accept_unqualified_
senders), 276
FEATURE(accept_unresolvable_
domains), 276
FEATURE(loose_relay_check), 270
FEATURE(nouucp), risks of, 275
FEATURE(promiscuous_relay), 271
FEATURE(relay_based_on_MX), 271
FEATURE(relay_entire_domain), 272
FEATURE(relay_hosts_only), 273
FEATURE(relay_local_from), 273
FEATURE(relay_mail_from), 274
macros to allow, 268
RELAY_DOMAIN macro, 269
RELAY_DOMAIN_FILE mc
macro, 269
STARTTLS and AUTH= extensions,
based on, 290
relays, 602??“606
RELEASE_NOTES files, 46, 51
keywords, 52
remote debugging, 144
Reply-To: header, 1164
req function (openssl), 207
Requests for Comments (see RFCs)
REQUIRES_DIR_FSYNC macro, 136
RequiresDirFsync option, 1082
$={ResOk} class macro, 874
ResolverOptions option, 1080??“1081
res_search(3) BIND library routine, 329
restrictexpand keyword, 237
restrictmailq keyword, 395
RET command, 247
RetryFactor option, 1081
Return-Path: header, 1165
Return-Receipt-To: header, 1165
reverse lookups, 341
revocation lists, 210
RFC2142 defined email addresses and
aliases, 474
RFC2822-style comments, 652
RFCs (Requests for Comments), 2
RHS (righthand side), 650
$[ $] (canonicalize hostname), 668
$: database operator, 676
$@ database operator, 675
$: delivery agent operator, 676
$@ delivery agent operator, 674
$# (return a selection, 667
$: (rewrite once prefix), 662
$@ (rewrite-and-return prefix, 664
$: RHS prefix, 675
$@ RHS prefix, 674
class macros, 671
conditional macro operators, 671
database-map information, 892??“896
$digit operator, 661
information in, 892??“896
rules, 661??“671
$>set (rewrite through a rule set), 664
Rickert, Neil, xvii
righthand side (see RHS)
rmail program, 378
-G switch and, 242
roles, 10??“18
filesystem, 10
root
legitimate requirements for root id
operation, 155
security considerations, 154
root delivery to files, 146
root DNS zones, 322
route addresses, 693
RrtImpliesDsn option, 1083
rule sets, 33, 683
= character, 685
associating numbers and names, 685
canonify rule set 3, 690??“694
case, 684
check_eoh rule set (for header
checking), 1135
final rule set 4, 694
focusing styles and, 703
header contents for checking, 1130
headers, checking with, 265??“267
Received:header, validity
checking, 266
Subject: header, virus screening
by, 265
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