• # DUL et auto-hébergement

    Posté par (site web personnel) . En réponse au journal SFR et SPF: une cause perdue. Évalué à 2.

    Il y a aussi certains serveurs qui rejettent les serveurs mail en DUL.

    Dynamic User List (DUL) includes IP addresses in dynamic ranges identified by ISPs. Most legitimate mail sources have static IP addresses.

    Par exemple, je suis chez Free (donc en DUL), mon serveur mail derrière ma box, et quand j'essaie d'envoyer un mail à certains (c'est rare, mais ça arrive), MAILER-DAEMON n'est pas content:

    <---@---.--->: host in.sjc.mx.trendmicro.com[A.A.A.A] said: 550
     5.7.1 Service unavailable; Client host [X.X.X.X] blocked using Trend
     Micro RBL+. Please see
     http://www.mail-abuse.com/cgi-bin/lookup?ip_address=X.X.X.X; Mail
     from X.X.X.X blocked using Trend Micro Email Reputation database.
     Please see <http://www.mail-abuse.com/cgi-bin/lookup?X.X.X.X> (in
     reply to RCPT TO command)
    
    

    Exemple avec une IP au hasard de chez Free:
    https://ers.trendmicro.com/reputations/index?ip_address=78.236.0.1

    Je clique donc sur Request to be removed from the global blocked list, et je reçois cette réponse:

    X.X.X.X is listed on DUL because your ISP Proxad has indicated that we
    are to list this address on DUL and every mail should be through
    their relay. Since Proxad is responsible for this space, we will
    not remove any entries from the DUL except on request from the
    owner listed in whois. That means that we need to hear from your
    ISP(Proxad) prior to removing any listing from the DUL.

    If you have further questions, please contact Proxad directly.

    Bon, encore une étape, il faut que je contacte Free.

    blog.rom1v.com