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SMTP-Auth login
If authentication with SMTP-Auth is required for using the relay server of your provider,
you can provide the username and password in the corresponding input fields. If you
leave these fields blank, authentication is disabled.
SMTP-Auth relates to outgoing mails and has nothing to do
with the user login that is required to retrieve mails from your
provider's POP3 server. If SMTP-Auth is really required by the
mail relay, the credentials can however be identical to those
used for the POP3 server.
According to the standard, SMTP-Auth is a "hot-to-hop"
authentication. Thus it involves only the two systems directly
connected. In this case the relay server asks the SX-GATE mail
server to authenticate itself and not e.g. the user who wrote
the email. Therefore SX-GATE can only use one specific login
for SMTP-Auth. It is not possible to use different credentials
depending on the sender of the mail.
As a rule, a mail relay server will insist on authentication, if it is not operated by your
Internet access provider. In this case we recommend that you insert the relay server of
the ISP over which you are connected to the Internet.
It is recommended to use the mail relay server offered by your
Internet access provider. Usually authentication is not required
in this case. In addition, the email transfer to the relay server
is not affected by bottlenecks within the Internet. So delivery is
generally faster.
Authenticationmethod
The SMTP auth credentials can be transmitted using different methods. Use this control
to force one of them. If SX-GATE may choose one of the methods, it will prefer the
MD5 based algorithms as the password won't be send in clear.
Not every relay server supports all of these methods. If you force
the usage of a method which is not supported by the relay, SX-
GATE will not be able to authenticate itself. The relay server
might then refuse delivery of emails.
