We are happy to help you!
Our technical support is available to you from Monday to Saturday from 9 a.m. to 12 midday and 1.30 p.m. to 5 p.m. You can of course send us your questions by email. Emailed support questions are also viewed at the weekend and answered promptly according to the degree of urgency.
Spam filter - problems with spam lists
- You cannot send any emails or sent emails are returned to you with an error message. However, accessing emails continues to function perfectly as before.
- At every attempt to send an email, to whatever address, you receive an error message either in the form of a reply email or a message directly in your mail program.
- The error messages have, for instance, the following content (mostly at the end of the email):
- "554 5.7.1 Rejected X.X.X.X we do not accept mail from dynamic IPs"
- "553 5.3.0 Spam blocked see: http://spamcop.net/bl.shtml?X.X.X.X"
- "550 5.7.1 Host is on the AHBL - Please see http://www.ahbl.org/tools/lookup.php?ip=X.X.X.X" (X.X.X.X correspondent to a IP address,
beispielsweise 126.96.36.199) pt mail from dynamic IPs"
- The messages come from spam filtering systems that are installed at the recipient’s end or on the Hoststar server used for sending emails. The IP address mentioned in the email usually corresponds to the private address with which you are registered with your Internet provider.
- If the message itself states that the IP address is on an anti-spam blacklist, this means that someone has recently sent spam emails with the address mentioned.
- Most Internet providers assign dynamic IP addresses to their customers. This means that you are assigned a random IP address when you start your Internet connection. Depending on the ISP, this address is changed automatically for a new one every 24 – 48 hours.
- Because of the constant changing of IP addresses, it could happen that someone sends spam via an address that you are assigned shortly afterwards for your own Internet access. Such situations naturally affect many completely innocent users. These days, most mail servers use spam lists in order to try and keep the number of spam emails as low as possible.
- The easiest, most effective method of avoiding problems with a spam list is to change the IP address. Unfortunately there is no way to get oneself assigned a new IP address directly, so it is necessary to employ the following little "trick":
Unplug the modem or router with which you connect to the Internet completely from the mains electricity supply, and wait for 20 – 30 minutes before you plug it back in again. Upon the new start, the modem or router will now have to obtain a new IP address from your Internet provider.
You can, by the way, check at any time whether you are on one or more spam lists. Access the URL http://mxtoolbox.com/blacklists You can enter your IP address in the field provided at the top of the page (you can get your IP address from, e.g., http://my-ip.ch. Click on "Blacklist Check". A list will open of the most popular anti-spam blacklists. On the list, lines marked in red will tell you on which spam databases your IP address is registered.
We will be happy to answer further questions: