saop saop adds authentication to any smtp server, using a pop3 or imap4 server as the authentication backend.
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server SMTP server SMTP IIS SMTP imap4 server IIS

saop Description

saop adds authentication to any smtp server, using a pop3 or imap4 server as the authentication backend. saop adds authentication to any smtp server, using a pop3 or imap4 server as the authentication backend.To do so, it sits in the middle of an SMTP session and intercepts login attempts. It then captures the user and password and uses them to authenticate against a POP3 server, an IMAP4 server or a password list.soap was created for the IIS SMTP service on windows, although the code compiles and works on linux (even better than on windows). In the case of IIS, it allows the SMTP service to authenticate users with the same user/password as the POP3 service without having to define local users.I've tested it with postfix and dovecot and with IIS' SMTP and POP3 service, but it should run with any server combinations. On windows it installs as a service and runs at startup.saop doesn't have any dependencies apart from a pthread library.saop is licensed under the GPL.

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