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*nix Thread, email whitelist in Technical; How would we go about setting up an email whitelist? We want to only allow students to send and receive ...
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    mark's Avatar
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    email whitelist

    How would we go about setting up an email whitelist?

    We want to only allow students to send and receive emails to and from addresses that we've approved globally to their groups

    We use Exim/ Squid on our Slackware box maintained by the LEA (they also update it so changes would have to go through them, although I do have root access).

    I'm sure it's possible but have no idea where to start. If anyone could point me to guides etc.

    Thanks

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    Re: email whitelist

    Urm, not sure.

    We use postfix here,
    to use we would add the following in our main.cf:

    smtpd_recipient_restrictions =
    reject_unauth_destination,
    check_client_access hash:/etc/postfix/client_exceptions,
    check_sender_access hash:/etc/postfix/sender_exceptions,
    reject_rbl_client list.dsbl.org,
    reject_rhsbl_sender dsn.rfc-ignorant.org

    You would add whitelisted clients to /etc/postfix/client_exceptions
    and people you dont want restricted you would add to /etc/postfix/sender_exceptions


    hope this helps :S

    sorry that its not for squid etc.

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    Re: email whitelist

    Sounds simple greenfieldsupport

    If there was something similar for squid that'd be perfect

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    Re: email whitelist

    May be just being supid here, but isnt squd a HTTP proxy / cache.

    Does it handle e-mails? or do you mean your trying to filter who they send e-mail to through there webmail?

    cause i could imagine you would find that hard :\...

    how do the students send and recieve e-mail?

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    Re: email whitelist

    if you mean the students use exim...

    I can imagine its muchly similar to postfix,,,

    try reading through this :
    http://www.exim.org/exim-html-3.20/d...oc.html#TOC813

    it should be somewhere in your exim documentation.
    most likely ALMOST the same commands i can imagine.

    Sorry that i canrt help further because i dont use exim and the idea of learning about another mail transfer agent i dont have to know scares me :\...


    good luck!!

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    Re: email whitelist

    I imagine you would not allow relay from your local domain / local hosts. and allow them only to send to certain people by using the

    recipients_reject_except = abcd@gmail.com

    command

    perhaps??
    dont know if exim supports a hashed or plain text file
    e.g.

    recipients_reject_except = /etc/exim/whitelist

    that might work ??/? :\

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    Re: email whitelist

    Thanks gfs - I shall try looking into that!

    I was speaking to a guy who mentioned squid having something to do with this. I'm new to it so it's all a bit above my head at the moment.

    We use squirrelmail as webclient predominantly.

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