Stefan Beyer

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Activity overview

Latest activity by Stefan Beyer
  • Stefan Beyer created an article,

    Our domains and websites

    These are our main domains and websites:, Company website, Helpdesk + Knowledgebase Blog on Com...

  • Stefan Beyer created an article,

    Postfix configuration

    Open Postfix config file (usually found at /etc/postfix/ on Linux or /usr/local/etc/postfix/ on FreeBSD) Add reject_rb_client= to smtpd_recipient_restrictions as shown below. ...

  • Stefan Beyer created an article,


    Our DNSBL fully complies to RFC#5782.   Support for test entries (see section 5 of the RFC) allow sites like to continuously query our DNSBL:      

  • Stefan Beyer created an article,

    Company details

    Company name:THREATINT (CYPRUS) LTD Address (Greek spelling):ΑΓΙΑΣ ΤΡΙΑΔΑΣ 13 SEA BREEZE 3 1017550 KITI, CYPRUS (English spelling):Agias Triadas Street 13 Sea Breeze 3 1017550 Kiti, Cyprus Company ...

  • Stefan Beyer created an article,

    Validating our VAT-ID

    As reported by some of our customers, validation of our VAT-ID CY 10401800S may fail. Please try the following to resolve the issue: Kindly make sure that you use the VAT-ID exactly as shown above...