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Chapter 10
Virus Blocking 185
Virus Blocking
Chapter 10
Levels of Protection
Your message security service offers multiple levels of protection against viruses,
including the use of virus-detection engines, early-detection filtering, protection
against zero-hour threats, and antivirus heuristics. This section describes each
level of protection.
Olympus Library of Virus Definitions
Google works as an Antivirus Development Partner with McAfee, and uses the
same technology employed in McAfee Antivirus software to develop the Olympus
library of virus definitions.
Incoming email is first scanned for viruses by the McAfee antivirus engine.
Authentium Antivirus Engine
The message security service also checks every minute for virus definition
updates from Authentium.
Any incoming email that is determined to be virus free by the Olympus library is
subjected to a second scan from the Authentium Antivirus engine.
Early Detection Filtering
Even though your message security service checks for new antivirus-definition file
updates every minute, there is always some delay between the discovery of a
virus and its inclusion in a definition file. Live viruses that have not been included
in definition files are referred to as zero-hour threats.
When you turn on Early Detection Filtering, a message that is not immediately
identifiable as virus infected but has an executable file attached, is sequestered in
the Early-Detection Quarantine.
- Message Security 1
- Part number: ADG_MSD_R645_85 2
- Contents 5
- Contents 7 7
- Contents 9 9
- About This Guide 11
- Online Help 12
- The Administration Console 13
- Administrator Passwords 14
- Using Home Page 14
- Search and User Shortcut 15
- Systems Tests 16
- Email Activity 17
- Current Activity 17
- Activity Information Meaning 18
- Message Composition 19
- Customer Care 19
- Choose Org Pull-Down List 20
- Show Hierarchy Panel 20
- User Organization 23
- Sub-Organization 24
- Hierarchy Configurations 25
- Assign Email Policies 28
- What Settings Are Made Where 29
- Organization Settings 30
- Default User Settings 31
- User-Specific Settings 31
- Organizations page overview 36
- List Organization Summaries 37
- Last Modified 38
- Date Created 38
- Show Orgs in a Popup Window 39
- Manage Organization Settings 40
- Inbound Services 41
- Outbound Services 42
- Organization Management 43 43
- Create an Organization 44
- Organization Management 45 45
- Find an Organization 46
- Organization General Settings 47
- Non-Account Bouncing 49
- Message Center 49
- Organization Management 51 51
- Move an Organization 52
- Delete an Organization 53
- Troubleshoot Organizations 53
- Users and Quarantines 55
- View All Your Users 56
- List Many Users 57
- List User Summaries 58
- Search for Users 59
- Basic Search 60
- Search from the Home Page 60
- Refine Your Search 61
- Manage Default User Templates 63
- How Default Users Work 64
- Manage Default User Settings 64
- Users and Quarantines 65 65
- Create a Default User 67
- Delete a Default User 68
- Add / Delete / Move Users 69
- Manage a User’s Settings 70
- Suspend or Reset a User 71
- Summary Overview 73
- User Settings Overview 73
- Manage Quarantined Messages 74
- Quarantine Messages Centrally 75
- Access a Quarantine 75
- Display Quarantined Messages 75
- Open Quarantined Messages 77
- Manage User Aliases/Nicknames 78
- User General Settings 79
- Suspend a User 81
- Reset a User 81
- Download Users and Settings 82
- Users and Quarantines 83 83
- Troubleshoot Users 84
- Users and Quarantines 85 85
- Administrators 87
- Limiting Authority 88
- Administrators 89 89
- Administrators 91 91
- Creating an Administrator 93
- Administrators 95 95
- Types of Administrators 96
- Account Administrators 97
- Administrators 99 99
- Sexually Explicit 100
- Monitor Administrators 101
- Low level monitor 102
- Administrators 105 105
- Settings 106
- Administrators 107 107
- Archive Administrators 108
- Administrators 109 109
- Archive Audit Administrator 110
- Administrators 111 111
- Optional 113
- Administrators 115 115
- Default User 116
- User Administrators 119
- Descriptions of Privileges 122
- All Standard Privileges 123
- Help Desk 123
- User Settings 123
- Organization Management 125
- Inbound Mail Processing 127
- Retention 127
- About Domains 129
- View Your Domains 129
- Searching for Domains 130
- Viewing Search Results 130
- Date Last Changed 130
- Add a Domain Alias 131
- Delete a Domain Alias 132
- Troubleshooting Domains 132
- The Message Center 133
- The Message Center 135 135
- Enable Access for an Org 137
- Disable Access for an Org 137
- The Message Center 139 139
- User Access Permissions 140
- Sender Lists 141
- Virus Settings 141
- Pending 141
- Quarantine 141
- Account Settings 141
- View Images 142
- Attachments, and 142
- Links (Message 142
- Center only) 142
- The Message Center 143 143
- Enabled for the org 144
- Disabled for the org 144
- Message Center Security 145
- Brand Your Message Center 145
- Message Center Color Palette 146
- Upload Logo 147
- Additional Branding 148
- About Notifications 149
- Welcome New User 152
- Password Reset 152
- Early Detection 153
- My First Spam 153
- Quarantine Summary 154
- Account Suspended 154
- Turning off Notifications 157
- Enabling Quarantine Redirect 157
- About Quarantine Summary 158
- Frequency 162
- Subject Links 162
- Delivery Time 162
- Inbox Delivery 162
- Feature Support Languages 164
- Language Date Format 164
- Spam Filters 169
- Types of Spam Filters 171
- When Spam Filters Apply 171
- How Spam Is Identified 172
- Why Catch Rates Might Vary 173
- Blocking 173
- Spam Filters 175 175
- Spam Filters 177 177
- Fine-Tune Spam Filters 179
- Phishing Attacks 180
- Botnet Attacks 180
- Early Detection Filtering 180
- Outbound Spam Scanning 181
- Troubleshoot False Positives 182
- Spam Filters 183 183
- When Spam Still Gets Through 184
- Virus Blocking 185
- Advanced Antivirus Heuristics 187
- About Virus Blocking 188
- Virus Definition File Updates 189
- McAfee Virus Definition Files 190
- Virus Blocking 191 191
- Non-Account 192
- Virus Blocking 193 193
- X-pstnvirus 194
- Virus Notifications 195
- Virus Outbreak Events 195
- Authentium: 197
- Content Manager 199
- Content Manager Features 200
- File Attachment Scanning 201
- Outbound Message Scanning 201
- How Content Manager Works 202
- When Content Filters Apply 203
- Types of Content Scanned 204
- When Content Scanning Occurs 204
- Content Filter Limitations 205
- About Message Dispositions 205
- Configure Content Manager 207
- To configure Content Manager: 208
- To create a content filter: 209
- To edit a content filter: 210
- Set Up Common Content Filters 211
- Content Manager 213 213
- Set Up a Compliance Policy 214
- Content Manager 215 215
- To reorder the filter list: 216
- To delete a content filter: 217
- • www.regexlib.com 218
- Uses for Regular Expressions 219
- Regular Expressions Syntax 219
- Content Manager 221 221
- Character Description 222
- Content Manager 223 223
- Regex Syntax Support 224
- Regex Character Limitations 224
- Range Limitations: 225
- Match Whole Word Only 226
- Match Exact Phrase Only 226
- Content Manager 227 227
- Usage example 228
- Regex example 228
- Match an Alphanumeric Format 232
- Content Manager 233 233
- Content Manager 235 235
- Block Messages with Profanity 236
- Specific Domain 236
- Content Manager 237 237
- Troubleshoot Content Manager 238
- Content Manager 239 239
- Content Manager Reference 240
- Content Filtering 241
- Use this setting... To 242
- General Filter Settings 243
- Filter Rules 243
- Use this field... To 244
- Message Dispositions 248
- Test Regular Expression 249
- Field Value 250
- Content Manager 251 251
- Credit Card Numbers Policy 252
- • nnnn nnnn nnnn nnnn 253
- • nnnn nnnn-nnnn nnnn 253
- • nnnnnnnnnnnnnnnn 253
- Filter Status 254
- Disposition 254
- About Sender Lists 255
- Approved Senders 256
- Approved Recipients 256
- Approved Domains 257
- Approved Mailing/Email Lists 257
- Blocked Senders 257
- Blocked Domains 257
- When Sender Lists Apply 258
- How Senders Are Identified 259
- How Domains Are Evaluated 259
- Recipients for Users 260
- Size Limits for Sender Lists 262
- Approved Senders List Cleanup 268
- Attachment Manager 271
- Attachment Manager 273 273
- Configure Attachment Manager 275
- Quarantine Redirect 276
- This message 277
- 552 Message too 277
- Field Value 277
- Attachment Filter Order 278
- Disposition Action 279
- 552 Message too large - psmtp 279
- 582 The 279
- Scanning Options 280
- Message Size Filter 280
- Custom File Types Filter 281
- Attachment Manager 283 283
- Industry Heuristics 285
- 8. Click Save 287
- MX Record Test 289
- Error Messages and Next Steps 290
- Troubleshooting Instructions 292
- Transport Layer Security 295
- How Inbound TLS Works 297
- STARTTLS 299
- Quarantined Messages 300
- Setting Up Inbound TLS 301
- Setting Up Outbound TLS 304
- About Policy Enforced TLS 307
- How Policy Enforced TLS Works 308
- Certificate Validation 312
- TLS Alerts 316
- Alerts Description 317
- Inbound Mail (Local) 318
- Outbound Mail (Remote) 319
- Outbound Mail (Local) 319
- Admin Help Center 320
- About Reports 321
- View a Report 321
- Inbound and Outbound Reports 323
- Summary Reports 323
- Summary by Domain Bytes 324
- Traffic Reports 325
- Traffic by Domain (Outbound) 326
- Field Description 327
- Traffic by Account (Outbound) 328
- Reports 329 329
- Spam Reports 330
- Spam by Filter Name (Inbound) 331
- Spam by Account (Inbound) 333
- SPF by Sender Domain 334
- Virus Protection Reports 335
- Virus by Sender IP (Inbound) 336
- Virus by Domain (Inbound) 336
- Virus by Domain (Outbound) 336
- Virus by Account (Inbound) 337
- Virus by Account (Outbound) 337
- Attachment Manager Reports 338
- Content Manager Reports 342
- Domain/Account (Outbound) 343
- Message Encryption Reports 345
- Archiving Reports 346
- Quarantine Delivery Reports 348
- TLS Reports 349
- Troubleshooting Reports 351
- Reports 353 353
- Message Log Search 355
- About the Data 356
- Run a Log Search 357
- Basketball Bracket 358
- 74.125.67.100 358
- 7-200029564 358
- 7-100003947 359
- To run a Log Search: 360
- Message Log Search 361 361
- Log Search Fields 362
- Delivered,Archived 363
- Field Description and Values 363
- Message Details Page 365
- 7-206340783 368
- 7-1000003708 369
- Quarantined 370
- Spam Filtering 370
- 11.29KB or 1.1 GB 371
- Common Log Search Scenarios 376
- Common answers include: 377
- New time for Staff Meeting 379
- Troubleshoot Log Search 380
- Batch Processing 381
- When To Use Batch 382
- Troubleshooting: Batch 382
- Customizing Notifications 383
- Editing Text with Tokens 386
- Content-Type: text/html 387
- Welcome New User Notification 388
- Password Reset Notification 391
- My First Spam Notification 393
- <-address-> 394
- <-notice_address-> 394
- <-isp-> 394
- <-inactive2-> 394
- <-loginhost-> 394
- New Spam Notification 395
- Suspend User Notification 398
- <-date-> 399
- <-from-> 399
- <-extra-> 400
- Interpreting Header Fields 401
- Received Header Field 402
- X-pstn-levels Header Field 402
- Spam Scores 403
- X-pstnvirus Header Field 404
- X-pstn-settings Header Field 404
- X-pstn-settings 405
- M:64.93900 C:93.23770 ) 405
- X-pstn-2strike Header Field 406
- X-pstn-xfilter Header Field 406
- X-pstn-neptune Header Fields 406
- Content Header Field Example 407
- X-pstn-addresses Header Field 408
- Analyzing Header Fields 410
- C:55.44761 ) 411
- Index 413 413
- Index 415 415
- Index 417 417
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