I got this mail last days. We are not using Astaro as SMTP proxy but Astaro is also using Spamhaus as i know.
So what is your opinion about this (SPAM or not):
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Dear Spamhaus user,
Spamhaus automated systems have detected that your company is querying the Spamhaus servers. However, we do not find your organisation registered as a Spamhaus subscriber.
Many users are unaware that the Spamhaus free public DNSBL service is restricted to low volume mail servers only. To prevent overloading of its public DNSBL service, Spamhaus now regularly checks for and terminates access of high volume query sources to the free public DNSBL service. This is explained in the Spamhaus DNSBL Usage Terms at The Spamhaus Project - DNSBL Usage Terms.
As a user of the Spamhaus DNSBLs, we hope you agree that they perform extremely well in protecting your users from spam and we hope you will continue to rely on them as a major part of your spam filtering.
However, to prevent your mail server being automatically cut off from the Spamhaus service, please consider registering now for the Spamhaus Datafeed service
http://www.spamhaustech.com/datafeed/pricecalculator.lasso?reseller=ma
-you’ll find pricing, datafeed delivery options and FAQ’s on Spamhaus’ usage policies. If you feel you qualify for free usage of the Spamhaus DNSBL service, please contact us to explain.
We appreciate your support of Spamhaus, and look forward to answering any questions.
If we do not hear from you, we will assume you are no longer interested in ongoing use of Spamhaus.
MXTools is an Authorized Spamhaus Datafeed Vendor and provides direct customer interface and customer support for the Spamhaus Datafeed Service.
http://www.spamhaus.org/datafeed/vendors.html
Yours Faithfully,
Kevin Olson
MXTools
Spamhaus/SURBL Sales and Support
1-866-931-9228 x 238
1-778-330-1074 x 238 Int'l
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