Module ngx_mail_pop3_module
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Module ngx_mail_pop3_moduleDirectives
pop3_auth
pop3_capabilities
Directives
Syntax:
pop3_auth method ...;
Default:
pop3_auth plain;
Context:
mail, server
Sets permitted methods of authentication for POP3 clients.
Supported methods are:
plain
USER/PASS,
AUTH PLAIN,
AUTH LOGIN
apop
APOP.
In order for this method to work, the password must be stored unencrypted.
cram-md5
AUTH CRAM-MD5.
In order for this method to work, the password must be stored unencrypted.
external
AUTH EXTERNAL (1.11.6).
Plain text authentication methods
(USER/PASS, AUTH PLAIN,
and AUTH LOGIN) are always enabled,
though if the plain method is not specified,
AUTH PLAIN and AUTH LOGIN
will not be automatically included in pop3_capabilities.
Syntax:
pop3_capabilities extension ...;
Default:
pop3_capabilities TOP USER UIDL;
Context:
mail, server
Sets the
POP3 protocol
extensions list that is passed to the client in response to
the CAPA command.
The authentication methods specified in the pop3_auth directive
(SASL extension) and
STLS
are automatically added to this list depending on the
starttls directive value.
It makes sense to specify the extensions
supported by the POP3 backends
to which the clients are proxied (if these extensions are related to commands
used after the authentication, when nginx transparently proxies the client
connection to the backend).
The current list of standardized extensions is published at
www.iana.org.