TZUTC: -0700
MSGID: 58324.sync_sys@1:103/705 2cd91b68
PID: Synchronet 3.21a-Linux master/a43ca30ea Jun 18 2025 GCC 12.2.0
TID: SBBSecho 3.28-Linux master/e2705e616 Jul 05 2025 GCC 12.2.0
BBSID: VERT
CHRS: UTF-8 4
FORMAT: flowed
open https://gitlab.synchro.net/main/sbbs/-/issues/950

After migrating from Avon (Paul's) Usenet service which was announced to be
sunset, when using real usenet provider I learned folks abuse non binary
groups to send binaries.

I blew through a 25GB quota in less than 30 days, due to approx 400 messages
posted in comp.lang.c++ was actually a multi-part yEnc encoded binary posted
to multiple usenet newsgroups including comp.lang.c++

Sample text from such messages

=ybegin part=270 line=128 size=104857600 name=Supermarket Simulator
1-0-1.part01.ra
                                                                           ▒
=ypart begin=103296001 end=103680000

Although the message size seem to vary, some were large 400,000 Bytes and
larger; so having a size limit may also be a way to fight this abuse.
Although, some of the messages seem normal size 26667 bytes which leads me to
believe newslink isn't capturing all the data in the message base (which is
good); but I'm sure it is pulling (requesting) it from the USENET provider
hence me blowing through my quota.


https://en.wikipedia.org/wiki/YEnc
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