-----BEGIN PGP SIGNED MESSAGE----- Hash: RIPEMD160 Hello. On Tue, 29 Aug 2000, Boris Kantwerk wrote:
How do I tell sendmail, to relay mails for all users sending a correct login and password independent from the host from which they send the mail?
First off: SMTP (Sendmail's protocol) does _not_ support authentication originally at all. Said that, there are several ways around this (sometimes) painful issue: - - SMTP after POP3: A user must login with POP3 first, then for some time this user and / or the user's ip-address may relay through sendmail Sendmail and POP3: http://www.sendmail.org/~ca/email/chk-rcpt5.html#POP - - SMTP AUTH (RFC 2554) based on SASL (RFC 2222): Adds a generic authentication system to SMTP. Based on the Cyrus SASL library, you can rebuild sendmail for use with SASL Cyrus SASL is available at ftp://ftp.andrew.cmu.edu/pub/cyrus-mail/ Sendmail instructions at http://www.sendmail.org/~ca/email/auth.html Clients with SASL-support: http://www.sendmail.org/~ca/email/mel/SASL_ClientRef.html - - Various tunneling methods: TLS (formerly SSL) (via STARTTLS, sslwrap or stunnel), SSH, PPTP, whatever. STARTTLS at: http://www.sendmail.org/~ca/email/starttls.html
Additional I want to enable secure password transmission for sendmail, popper and ftpd and don't know how!
Your best bet should be something like SSL or SSH, I think (Yes, POP now also supports a somewhat better authentication mechanism, but not many clients did support it, last time I tried) How about completely scrapping FTP and replacing it with SSH? This, combined with sendmail, POP3, and IMAP all over SSL is what I use here.
Thanx, Boris.
Greetings
olli
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Oliver Hensel