December 2002
Intermediate to advanced
1232 pages
56h 38m
English
Content preview from Sendmail, 3rd Edition
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Masquerading
Masquerading is the process of transforming the local hostname in addresses into that of another domain. This results in the mail message appearing to come from that other domain rather than from the local host. Masquerading is most often used in domains where email is addressed to the domain rather than to individual hosts inside the domain.
Masquerading usually rewrites header-sender addresses. Some mc features allow you also to rewrite envelope addresses and recipient headers. The complete list of all definitions and features that affect masquerading is shown in Table 4-3.
Table 4-3. Definitions and features affecting masquerading
|
What |
§ |
Version |
Masquerade |
|
EXPOSED_USER |
V8.6 and up |
All but these hosts | |
|
EXPOSED_USER_FILE |
V8.12 and up |
All but these | |
|
FEATURE(allmasquerade) |
V8.2 and up |
The recipient too | |
|
FEATURE(domaintable) |
V8.2 and up |
Rewrite old domain as equivalent to new domain | |
|
FEATURE(generics_entire_domain) |
V8.10 and up |
Transform sender addresses | |
|
FEATURE(genericstable) |
V8.8 and up |
Transform sender addresses | |
|
FEATURE(limited_masquerade) |
V8.8 and up |
Only MASQUERADE_DOMAIN hosts | |
|
FEATURE(local_no_masquerade) |
V8.12 and up |
Don’t masquerade local mail | |
|
FEATURE(masquerade_entire_domain) |
V8.8 and up |
All of a domain | |
|
FEATURE(masquerade_envelope) ... |
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