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Country Code RBLs

BAlfson
In the feature-request site, Alan Toews commented:
People wishing to just stop email by country can do this now using RBLs. Just google for country code rbl and you should find a few hints.
 
Has anyone used this successfullly?

Cheers - Bob


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  • 0 in reply to wingman
    Interesting, thanks.  Now the question is whether anyone has used any of those RBLs.

    Cheers - Bob
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
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  • 0 in reply to BAlfson
    A general (not specific to Astaro) warning:
    If an RBL is down or unreachable, your mail system may stop accepting mail, or slow down dramatically.

    Sendmail has options for whether to continue accepting mail or not, as well as timeout settings for how long to try.
    I don't know what Astaro's SMTP proxy does in this situation.

    I personally use spamhaus and spamcop RBLs in Sendmail (with it set to fail-open) and have not had any problems, but afaik neither offer country-based blocking.

    I've posted here before about creating network definitions in Astaro for regions or countries (to use in PacketFilter rules), but it's a lot of work.
    Not sure if the PacketFilter would block things coming into the SMTP proxy though.

    Barry
  • 0 in reply to BarryG
    Hi Barry,

    I am running a Fedora based system with Sendmail and MailScanner and have twice been burned by RBLS being turned off and subsequently causing all my incoming emails to bounce.  I see in the message prior to this one you said there is a fail-open option that can be used to keep this from happening.  Can you point me to further information on how to use this?  I did a google search and couldn't really find any information on how to use this option.

    Thanks,
    Tim[H]
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