Hi, I got some more information from my provider: http://www.stopforumspam.com/ipcheck/62.141.45.246 The spam is indeed spamming with accounts in some message boards. (which is also forbidden in the ToU of my provider)
spriver:
Hi,
I am (or was) running a Tor Exit Node with about 200-250bmit/s on a VPS at Webtropia for several months with the common reduced exit policy (https://globe.torproject.org/#/relay/D218DF2C542CD1FB57FCF36DB6672A0DE6A8CBF...). They never had a problem with the fact of running an exit, from time to time I got an abuse mail to which I responded with the "usual thing" (that I'm running an exit and the connections are not initiated by me. If some party wishes not to be contacted I would restrict acces [exit policy]). On Monday morning my server got shut down. I contacted them by asking, why the server was shut down, they responded that some spam was sent (abuse mailing from courbis.fr, axmo12.de claimed a brute force on SSH and the usual stuff from Webiron) and thus my server was blocked by them. They now claim that they are entitled to contractual penalty of 5.100,- € to be charged because I violate their Terms of Use. Their Terms do not forbid Tor itself, but spamming and other illegal things such as port scanning and DoS-attacks (https://www.webtropia.com/de/unternehmen/agb.html). They also told me that they cannot monitor if the traffic is really Tor traffic and that I should configure my server to prevent such abuse.
How should I proceed there?
Cheers!