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Configuring and Managing the POP Server
18.1 Key Concepts
• TRANSFORM
The POP server attempts to translate the DECnet node name to a TCP/IP
host name. If the name can be translated, the POP server checks to see
whether the translated host name is local. If so, the
From:
header becomes
an address in the form user@substitute-domain. If not, the
From:
header
becomes an address in the form user@hostname. Note that the POP and
SMTP servers call the same routine to determine if a host name is local.
The following examples show some ways the POP server translates DECnet
node names to TCP/IP node names. In these examples:
The local host name is
orders.acme.widgets.com
ORDERS translates to
"orders.acme.widgets.com"
* The message header
From: ORDERS::J_SMITH
becomes:
From: [email protected]
* For a substitute domain of
acme.widgets.com
, the message header
From: ORDERS::J_SMITH
becomes:
From: [email protected]
* If HOST12 translates to
host12.acme.widgets.com
, which is not
local on
orders.acme.widgets.com
, the message header
From:
HOST12::J_JONES
becomes:
From: [email protected]
* If HOST13 does not translate and host
orders.acme.widgets.com
has no substitute domain defined, the message header
From:
HOST13::J_JONES
becomes:
From: "HOST13::J_JONES"@orders.acme.widgets.com
18.1.6.1.3 User Name-Only Address If an SMTP substitute domain is defined,
the POP server appends it to the user name, followed by a commercial at sign (@).
Otherwise, POP uses the local host name.
For example, with a substitute domain defined as
acme.widgets.com
, the message
header
From: Smith
becomes:
From: [email protected]
18.1.6.1.4 DECnet Address That Contains Quotation Marks The values
assigned to the TCPIP$POP_QUOTED_DECNET_REWRITE logical name define
how the POP server rebuilds a DECnet address that contains quotation marks.
The values are:
• GENERIC
The address is changed to the SMTP format. For example,
on host
widgets.xyzcorp.com
, the message header
From:
ORDERS::"[email protected]"
becomes:
From: "ORDER::\"[email protected]\""@widgets.xyzcorp.com
• NONE
The
From:
line is passed to the POP client without being modified. For
example:
From: ORDERS::"[email protected]"
18–6 Configuring and Managing the POP Server
- Compaq TCP/IP Services for 1
- Management 1
- Contents 3
- 4 Configuring Routing 4
- Part 2 BIND 4
- Part 3 Configuring Services 6
- 7 Configuring the DHCP Server 6
- 8 Configuring the DHCP Client 8
- 9 Configuring BOOTP 8
- 10 Configuring TFTP 9
- 11 Configuring the Portmapper 9
- 13 Configuring SNMP 10
- 16 Remote (R) Commands 11
- Part 5 Network File Services 13
- 20 NFS Server 13
- 21 NFS Client 14
- 24 Setting Up PC-NFS 15
- Part 7 Appendixes 15
- C How NFS Converts File Names 17
- D Acronyms 17
- Examples 17
- Intended Audience 21
- Document Structure 21
- Related Documents 22
- Reader’s Comments 24
- Conventions 24
- Monospace text 25
- Connecting to the Network 27
- Managing TCP/IP Services 29
- 1.1 Getting Started 30
- 1.1.1 Logical Names 30
- 1.1.3 Saving Changes 31
- DECnet-over-TCP/IP Support 33
- 1.5 Auxiliary Server 35
- 1.6 Enabling Services 37
- Configuring Interfaces 39
- Configuring Serial Lines 43
- 3.1 Key Concepts 44
- 3.1.4 Point-to-Point Protocol 45
- 3.3.6 Shutting Down SLIP 56
- 3.4.1 Solving PPP Problems 58
- Configuring Routing 59
- 4.1 Key Concepts 60
- 4.2 Configuring Static Routes 61
- 4.4 Configuring GATED 64
- 4.4.2 Enabling Forwarding 65
- 4.4.3 Extending Routing 66
- 4.4.4 Interface Routes 67
- 5.1 Key Concepts 72
- 5.2 Migrating to BIND 8.1 74
- 5.3.6 Dynamic Updates 90
- 5.4.4 Sample Database Files 97
- Configuring and Managing BIND 100
- 5.7.2 Examples 104
- 5.8.1 Invoking NSLOOKUP 107
- 5.8.2 Obtaining Help 108
- 5.8.3 NSLOOKUP Commands 108
- 5.8.4 Default Option Values 109
- 5.8.5 Query Types 113
- 5.9.1 Server Not Responding 118
- 5.9.2 Serial Number Mismatch 118
- 6.1 DNS Clusters 119
- 6.2 Round-Robin Scheduling 119
- 6.3 Load Broker Concepts 121
- 6.7.1 Metric View Utility 127
- Configuring Services 129
- Configuring the DHCP Server 131
- 7.1 Key Concepts 132
- 7.1.1 How DHCP Operates 132
- 7.2 DHCP Server Components 134
- 7.2.2 Configuration Files 135
- 7.2.3 Command Files 145
- 7.2.4 Logical Names 145
- 7.2.5 Log Files 147
- 7.5.1 General Information 154
- 7.7 Configuring DHCP Manually 180
- 7.8 Supporting Utilities 191
- Configuring the DHCP Client 197
- 8.1 Key Concepts 198
- 8.1.2 Requesting a Lease 199
- 8.1.3 Requesting Parameters 199
- 8.2 DHCP Client Components 200
- 8.2.2 Configuration Files 201
- 8.2.3 Command Files 207
- 8.2.4 System Logicals 207
- 8.2.5 Log Files 207
- 8.4.2 Configuring the Software 210
- 8.6 Using the SHOWDHC Utility 213
- Configuring BOOTP 215
- 9.1 Key Concepts 216
- 9.2.2 BOOTP Service Decisions 216
- 9.2.3 BOOTP Security 217
- 9.4.3 BOOTP Logical Names 219
- 9.5 Creating a BOOTP Database 220
- 9.5.2 Converting UNIX Records 221
- 9.6 Solving BOOTP Problems 222
- Configuring TFTP 225
- 10.3 TFTP Security 228
- 10.4 Solving TFTP Problems 228
- Configuring the Portmapper 231
- Configuring and Managing NTP 235
- 12.1 Key Concepts 236
- 12.3 Configuring Your NTP Host 238
- 12.6 NTP Event Logging 244
- 12.6.1 Sample NTP Log File 247
- 12.8 NTP Utilities 249
- 12.9 Solving NTP Problems 261
- Configuring SNMP 263
- 13.1 Key Concepts 264
- 13.4 Configuring SNMP 268
- 13.4.3 SNMP Options 271
- 13.5 SNMP Log Files 282
- 13.6 Solving SNMP Problems 283
- 14.1 Managing TELNET 295
- 14.2 Solving TELNET Problems 297
- Configuring and Managing FTP 301
- 15.1 Managing FTP 302
- 15.2 Solving FTP Problems 306
- Remote (R) Commands 309
- 16.3 Security Considerations 311
- 16.3.2 Case-Sensitivity Flag 312
- 16.5.2 Client Utilities 313
- 16.5.3 Client Examples 314
- Configuring and Managing SMTP 315
- 17.1 Key Concepts 316
- 17.1.5 How SMTP Routes Mail 318
- 17.2 Configuring SMTP 320
- 17.4 Managing SMTP 322
- 17.6 Configuring SMTP AntiSPAM 329
- 17.7.1 SFF Security Measures 341
- 17.7.3 Invoking SFF from DCL 341
- 17.9 Solving SMTP Problems 342
- 18.1 Key Concepts 345
- 18.1.1 POP Server Process 346
- -ERR access denied 353
- X-POP3-Server 354
- X-POP3-ID 354
- 18.4 Enabling MIME Mail 356
- 18.5 Solving POP Problems 356
- 19.1 Key Concepts 359
- 19.2 XDMCP Queries 360
- 19.3 XDM Configuration Files 360
- 19.3.2 XACCESS.TXT File 361
- 19.3.3 XSERVERS.TXT File 363
- 19.3.4 XDM_KEYS.TXT File 363
- 19.3.5 XDM_XSESSION.COM File 364
- 19.4 XDM Log Files 365
- Network File Services 367
- NFS Server 369
- 20.1 Key Concepts 370
- 20.1.1 Clients and Servers 370
- 20.4 Setting Up PC-NFS 376
- 20.6.1 Adding Proxy Entries 378
- 20.7 Backing Up a File System 379
- /usr/smith 382
- 20.14 File Locking 387
- NFS Client 391
- 21.1 Key Concepts 392
- 21.4.1 User-Level Mounting 398
- 21.4.2 Automounting 400
- 21.4.3 Background Mounting 400
- 21.4.4 Overmounting 401
- 21.4.5 Occluded Mounting 401
- Configuring Printing Services 403
- 22.1 Key Concepts 405
- 22.2 Configuring LPR/LPD 406
- 22.3 Configuring Printers 410
- 22.8 Solving LPD Problems 416
- 23.1 Key Concepts 417
- 23.3 Setting Up Print Queues 418
- 23.4 Setting Up Relay Queues 419
- 23.6.3 Stalled Print Queues 424
- Setting Up PC-NFS 427
- 24.4 PC-NFS Authentication 428
- Appendixes 429
- Configuration Reference 431
- A.3 Statement Grouping 432
- A.4 Configuration Statements 432
- A.6.1 Assigning Preferences 435
- A.7 Tracing Options 436
- A.7.1 Global Tracing Options 437
- A.7.2 Packet Tracing 438
- A.8 Directive Statements 439
- A.9 Options Statements 439
- A.10 Interface Statements 440
- A.10.1 Interface Lists 443
- A.11 Definition Statements 445
- A.12 Protocol Overview 446
- A.12.4 ICMP 447
- A.12.5 Redirect 447
- A.13 The ICMP Statement 448
- A.14 Redirect Processing 449
- A.16 The Kernel Statement 453
- A.16.7 Special Route Flags 457
- A.16.9 Kernel Tracing Options 459
- A.17 Static Routes Statements 460
- A.18 Control Statements 462
- A.18.2 Matching AS Paths 463
- A.18.3 The Import Statement 465
- A.18.4 The Export Statement 467
- A.18.5 Specifying the Source 470
- A.18.6 Route Aggregation 471
- A.20 For More Information 477
- (3F hexadecimal) 481
- How NFS Converts File Names 483
- Acronyms 487
- DHCPSIGTERM 494
- NSUPDATE 499
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