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mckingsley

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So I guess yahoo has been having some issues lately and getting listed on SpamCop. We have SpamCom configured to block in our Kerio Spam settings. Is there a way to allow a domain through such as yahoo but still keep SpamCop on block mode as opposed to a scoring mode? From what I understand the whitelist section only works with emails that are not already blocked by one of the blacklists.

Thanks
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mckingsley

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I actually know about that setting but didn't think it was practical. Doesn't yahoo have a million IPs for their mail server and they would be changing?
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TorW

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Well, there's "practical" and there's "getting mail from Yahoo". All you have to do is pick the one you like best Wink The IP addresses Yahoo uses for their outgoing mail relays are listed on their postmaster pages. There are less of them than you think, and they can easily be combined into CIDRs.

And if you get bright ideas: their mail relays aren't relaying exclusively for yahoo.com addresses.
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mckingsley

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Thanks for the info. Just to clarify some more, is there some way to import a list such the large yahoo IP list or CIDR list into Kerio? I did some quick searching around but not see any way to do so. If not then would one recommend to just change spamcop from blocking mode to a scoring mode? Any other suggestions? Thanks so much
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TorW

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No, there is no way to import a flat file into the custom IP lists in KC. Not as far as I know anyway. The lazy way is of course to chamge SC hits into spam score, but you'll have to watch the security.log first and try to imagine how much extra mail processing you'll get.

The easiest whitelisting method is probably to whitelist only the /24 where the offending Yahoo IP is and watch the logs for more whitelisting candidates. Yahoo tend to use whole /24s for their outgoing mail relays, ref this list. And yes, there's about a million of them. Or 7265 to be precise.
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