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Index: U

u flag : 30.8. Alphabetized F= Flags

U flag : 30.8. Alphabetized F= Flags

U line (host status file) : B.1. Status file lines

$u macro

6.3. The local Delivery Agent
7.3. Predefined Macros
31.10. Alphabetized Reference

$U macro : 31.10. Alphabetized Reference

u option : (see DefaultUser (u) option)

U option : (see UserDatabaseSpec (U) option)

-U switch : 36.7. Alphabetized Reference

U= equate

30.3.1. Tuning Without an Appropriate Keyword
30.4. The Equates
30.8. Alphabetized F= Flags

UDB_DEFAULT_SPEC macro : 18.8. Alphabetized Reference

uid

assume specified : 30.8. Alphabetized F= Flags
running agent as : 30.4. The Equates

uname system call : 18.8. Alphabetized Reference

unavailable resource error : 36.5.9. EX_UNAVAILABLE A Resource

"Unbalanced" warning : 28.1.2. Rules Are Treated Like Addresses

undeliverable addresses

in aliases : 4.1.4. Verify Mode (-bv)

undivert command (m4) : 19.1.4. m4 diversions

uniformity : 18.2. Vendor Versus Compiling

UNIX

error numbers : B.1. Status file lines
exit status : B.1. Status file lines
mailbox file : 3.2.1. Delivery to a Mailbox

UnixFromLine option

31.10. Alphabetized Reference
34.8. Alphabetized Reference

"unknown control line" message : 5.1. Overview

"Unknown host status version" message : B.1. Status file lines

unknown local users : 31.10. Alphabetized Reference

"unknown mailer" error : 29.6. Rule Set 0

unpacking source code

2.1. Get the Source
18.3.1. What's Where in the Source

unqualified

addresses : 16.5. Qualify All Addresses?

names

19.6. Alphabetized m4 Macros
31.10. Alphabetized Reference

unquoted whitespace : 13.2.8. The Unquoted Space Replacement Character

UnsafeGroupWrites option : 34.8. Alphabetized Reference

updating aliases file : 4.1.3. Rebuild Aliases Mode (-bi)

upgrading sendmail : 18.2. Vendor Versus Compiling

use_ct_file feature : 19.6. Alphabetized m4 Macros

use_cw_file feature : 19.6. Alphabetized m4 Macros

UseErrorsTo (l) option : 34.8. Alphabetized Reference

User Database

18.8. Alphabetized Reference
33.5. The User Database
33.8. Alphabetized Reference
34.8. Alphabetized Reference
rewrite : 30.8. Alphabetized F= Flags

user database class : 33.8. Alphabetized Reference

User Database key : 30.8. Alphabetized F= Flags

"User unknown" message : 4.2. Verbose (-v)

UserDatabaseSpec (U) option

18.8. Alphabetized Reference
34.8. Alphabetized Reference

userdb database class : 33.8. Alphabetized Reference

USERDB macro : 18.8. Alphabetized Reference

usernames

capitalization : 30.8. Alphabetized F= Flags
recipient's : (see $u macro)

users

$: operator and

9.2.3. The User ($:)
9.3. Testing Rule Set 0
29.6.1. Further Processing: $:user
30.5.3. The $: Part
33.4.1. Specify a Default with $:

alias delivery to : 24.2.1. Delivery to Users

default identities for

13.2.5. The Default User Identities
22.8.3.1. The DefaultUser option
34.8. Alphabetized Reference

.forward file : 22.5.3. Permissions for ~/.forward Files

groups : 18.8. Alphabetized Reference

including oneself on mailing lists : 34.8. Alphabetized Reference

as LHS of alias : 30.8. Alphabetized F= Flags

local : 31.10. Alphabetized Reference

accepting mail from only : 20.2.1. Accept Mail Only From Our Domain

delivery to

3.2. Role in Local Delivery
19.6. Alphabetized m4 Macros
29.6.3. Delivering to Local Recipient
30.8. Alphabetized F= Flags

mailing list instructions for : 25.5.4. Users Ignore list-request

marked with + : 24.4.3. Plussed Users

passwords : (see passwd file)

recipient of bounced mail : (see $n macro)

running sendmail manually : 1.4. Run sendmail by Hand

semiprivileged : 22.5. Permissions

trusted

14.6. Trusted User
19.6. Alphabetized m4 Macros
22.8.1. Trusted Users
32.5. Alphabetized Reference

trusted users : 5.3.10. Trusted Users

unavailable : (see undeliverable addresses)

verifying with SMTP : 22.3.2. SMTP vrfy and expn

USESETEUID macro : 18.8. Alphabetized Reference

/usr/tmp file : 18.8. Alphabetized Reference

usrerr() : 20.2.1. Accept Mail Only From Our Domain

UUCP

3.3.2. UUCP

8.1.4. UUCP and Host Paths

19.6. Alphabetized m4 Macros

addresses

17.1.4. UUCP Addresses
17.4. Rule Set 4

eliminating support of : 19.6. Alphabetized m4 Macros

$k macro : 31.10. Alphabetized Reference

local handling of : 29.6.5. Handling UUCP Locally

m4 configuration options : 19.4.6. UUCP

macros for repays : 31.10. Alphabetized Reference

UUCP_RELAY macro (m4) : 19.6. Alphabetized m4 Macros

uucpdomain feature : 19.6. Alphabetized m4 Macros

UUCPSMTP macro (m4) : 19.6. Alphabetized m4 Macros

uuencode/uudecode utilities : 22.6. The Aliases File

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