troubleshooting Question

550 5.7.1 Remotehost is listed in the following RBL lists

Avatar of Andreas Kruschel
Andreas KruschelFlag for Germany asked on
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My customer gets a error message after sending a mail to their creditor:
SMTP error from remote server for DATA command, host: mx1.drei-punkt.net (xxx.xxx.xxx.xxx) reason: 550-5.7.1 This email was rejected because it violates our security policy
550 5.7.1    Remotehost is listed in the following RBL lists: MailSpike

I can't find either the creditor mailserver or our mailserver on blacklist "Mailspike".
My question is now: Is the Remotehost mentioned here our Mailserver or the mail server from the creditor; so you has the problem?

LG

Andreas Kruschel
ASKER CERTIFIED SOLUTION
Ian Pattison
Independent IT Consultant

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