IMAP#

Directives#

imap_auth#

Syntax

imap_auth method ...;

Default

imap_auth plain;

Context

mail, server

Sets permitted methods of authentication for IMAP clients. Supported methods are:

plain

LOGIN, AUTH=PLAIN

login

AUTH=LOGIN

cram-md5

AUTH=CRAM-MD5. In order for this method to work, the password must be stored unencrypted.

external

AUTH=EXTERNAL

Plain text authentication methods (the LOGIN command, AUTH=PLAIN, and AUTH=LOGIN) are always enabled, though if the plain and login methods are not specified, AUTH=PLAIN and AUTH=LOGIN will not be automatically included in imap_capabilities.

imap_capabilities#

Syntax

imap_capabilities extension ...;

Default

imap_capabilities IMAP4 IMAP4rev1 UIDPLUS;

Context

mail, server

Sets the IMAP protocol extensions list that is passed to the client in response to the CAPABILITY command. The authentication methods specified in the imap_auth directive and STARTTLS are automatically added to this list depending on the starttls directive value.

It makes sense to specify the extensions supported by the IMAP backends to which the clients are proxied (if these extensions are related to commands used after the authentication, when Angie transparently proxies a client connection to the backend).

imap_client_buffer#

Syntax

imap_client_buffer size;

Default

imap_client_buffer 4k|8k;

Context

mail, server

Sets the size of the buffer used for reading IMAP commands. By default, the buffer size is equal to one memory page. This is either 4K or 8K, depending on a platform.