Re: [tor-relays] BitTorrent complaint

[Moritz Bartl <moritz@xxxxxxxxxxxxxx>]

On 13.04.2013 09:05, Jorge-Leon wrote:
>> 1) Allow everything (except port 25, which is reasonable to block)
>> 2) If you don't want the DMCA spam notices, use the reduced exit policy.
> Please expand on "except port 25, which is reasonable to block", or
> point me to an explanation.

In short: We had port 25 (SMTP) open for a while, which results in a lot
of spam directly sent to mailservers across the globe, which then
immediately will get your IP blacklisted at a lot of DNSBLs. Many ISPs
don't like their own ranges to contain blacklisted IPs, because that
results in lower overall "reputation scores", and sometimes
blacklistings are extended to a whole range of IPs, which then affects
other customers.

-- 
Moritz Bartl
https://www.torservers.net/
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