Call us

Our support team is happy to help you, be it for technical or administrative issues. We’re there for you!


+43 (0)720 511 555
(Calls from the Austrian landline 0.25 EUR / minute)


Monday to Saturday
9.00 – 12.00 am
1.30 – 5.30 pm

Technical Support

Monday to Friday
8:00 am – 5:30 pm

9:00 am – 4:00 pm


Write to us

To be able to help you as quickly and effectively as possible, we kindly ask that you make your request as specific as possible. And of course you can contact us by email:

Protection against spam & viruses

Support > Administration > before ordering, useful information

Spam protection

  • Hoststar synchronizes its systems with three spam databases to ensure we can filter out spam reliably and effectively. By adding relevant spam servers (open relay servers**) to the blacklist, entire waves of spam can be stopped.
  • In addition, our spam filter is also equipped with OCR software to correctly identify and filter out graphics-based spam emails. 
  • **Open relays are mail servers that anyone can use to send emails. Many spammers exploit these third-party email servers to send their advertising emails.

Virus protection

  • Our virus scanners check all emails for infected content and automatically delete infected emails. In addition, the entire Hoststar server farm is protected by cutting-edge firewall technology.