Encrypted Reception - Canon DU7-1178-000 Service Manual

Chapter 2
C: AUTH CRAM-MD5
S: + PDE5MDQ0LjEwNDU4MTEyMThAYmFiYS5jY20uY2Fub24uY28uanA+
C: ZnJlZCA5ZTk1YWVlMDljNDBhZjJiODRhMGMyYjNiYmFlNzg2ZQ==
S: +OK Authentication successful....
...
<Selection of the authentication algorism>
When SMTP server possesses multiple authentication mechanisms, the authentication method is deter-
mined in the following priority order.
1) CRAM-MD5 (Not supported)
2) NTLM
3) PLAIN when STLS (SSL) operation
4) LOGIN when STLS(SSL) operation
From Service mode, you can prohibit the usage of each authentication method. If you set Service mode
setting to "1", you can prohibit the usage of the authentication method. (All defaults: usable)
Usually, the device is used with the default settings, but if the server administrator prohibits the usage of
the specific authentication method, you can change the setting by Service mode.
< POP AUTH-related Addtional Settings>
Actual POP AUTH-related setting is selected in the order of System Settings > Network Settings > E-mail/
I-Fax > Authent./ Encryption > POP AUTH, and then you want to enter the user name and password nec-
essary for POP address and POP password. When enabling "SSL Allow (POP)" (the setting of encryption
communication), the encrypted authentication by STLS command can be used at PLAIN and LOGIN au-
thentication.

2.1.4 Encrypted reception

0010-7595
There are two types of encrypted reception methods available - encrypted POP and SMTP email recep-
tions.
Encrypted POP Reception
When Allow SSL (POP) control is turned on in Authentication/Encryption Settings window* and the POP
server supports STLS command, defined in POP3 protocol, the imageRUNNER/iR can communicate with
encrypted packets using SSL (TLS). The communications slows down since not only the user name and
password but also the entire communication data for email reception are encrypted. If Allow SSL (POP)
control is turned on but the POP server does not support STLS command of POP3 protocol, it results in
an error. If an error occurs in POP SSL communications, the status line displays "SSL Error (POP)."
* Authentication/Encryption Settings window: opens by selecting Additional Functions > System Settings
> Network Settings > Email/I-Fax > Authent./ Encryption.
STLS
An extended SMTP command, defined in RFC 2487. RFC 2449 -- POP3 Extension Mechanism -- speci-
fies that STLS must support CAPA command. If a server supports STLS, it states the support in response
to CAPA command.
The following lines exemplify communications when STLS is enabled.
...
S: +OK POP3 v2001.78 server ready <4a61.3e55cd70@test.canon.co.jp>
C: CAPA
S: +OK Capability list follows:
S: TOP
S: LOGIN-DELAY 180
S: UIDL
S: STLS :<-- Indicates the server supports STLS.
S: USER
S: SASL CRAM-MD5 LOGIN
S: .
C: STLS
S: +OK Begin TLS negotiation
<TLS negotiation, further commands are under TLS layer>
S: +OK POP3 v2001.78 server ready 4a61.3e55cd70@test.canon.co.jp
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