spamcannibal has its uses, mainly in a scoring system. But indeed, refusing emails solely on the reason that the mail server is listed on spamcannibal is probably a poor idea. Actually, refusing emails by relying solely on any blacklist which lists ranges instead of individual IPs is a poor idea (except maybe for ipv6).

On 09/12/2016 16:44, Gil Bahat via mailop wrote:
+1 unreasonable for an indiscriminate block on all of Amazon SES. Why
would anyone want to use such a BL is beyond me given that there are
many, much better alternatives.

On Dec 9, 2016 5:30 PM, "Vladimir Dubrovin via mailop"
<[email protected] <mailto:[email protected]>> wrote:

    25.11.2016 22:50, Al Iverson пишет:
    Hi Otto,

    Long time no talk. Hope things are going well.

    The Spam Cannibal maintainer is a reasonable guy. He doesn't spread
    his contact info far and wide, perhaps because he doesn't want to
    argue with spammers. So, I would feel bad about sharing his details
    publicly. But I will forward your post to him and invite him to follow
    up with you. Hope that helps.

    I really doubt it. This reasonable guys blacklisted our (Mail.Ru)
    front servers due to same reason ('Generic PTR'). Yes, we have few
    hundreds of front servers, because we host >50% of mailboxes for
    russian-speaking users so we need to count our servers somehow. If
    you use Spamcannibal you will probably have deliverability problems.




    Best regards,
    Al Iverson

    --
    Al Iverson
    www.aliverson.com <http://www.aliverson.com>
    (312)725-0130


    On Fri, Nov 25, 2016 at 8:14 AM, Otto J. Makela <[email protected]> 
<mailto:[email protected]> wrote:
    Sending this to a couple of secret societies, apologies if you see this 
twice.

    Is there any point in trying to contact Spamcannibal?

    One of our clients (we're the Finnish NREN, so an university in Finland)
    was notified via Shadowserver that a swathe of their unused IP space is
    listed on Spamcannibal:

    https://www.shadowserver.org/wiki/pmwiki.php/Services/Blacklist
    <https://www.shadowserver.org/wiki/pmwiki.php/Services/Blacklist>

    Since the network in question has no assigned addresses, there are no DNS
    records for it. We suspect that the netblock was momentarily snatched from
    them via BGP (or some other routing trick) and then used to send spam.
    We'd really like to know more, like get spamples or at least time stamps.

    When I tried to get in touch with Spamcannibal about one IP address via
    their contact form, submitting the form resulted in the glib message:

    xxx.xxx.xxx.xxx not eligible for removal: GENERIC PTR

    So, anyone know if the form went through, does someone have a contact there,
    and is there any point in doing so?

    --
       /* * * Otto J. Makela <[email protected]> <mailto:[email protected]> * * * * * * * * 
* */
      /* Phone: +358 40 765 5772 <tel:%2B358%2040%20765%205772>, ICBM: N 60 10' 
E 24 55' */
     /* Mail: Mechelininkatu 26 B 27,  FI-00100 Helsinki */
    /* * * Computers Rule 01001111 01001011 * * * * * * */

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    --
    Vladimir Dubrovin
    @Mail.Ru

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