[Users] claws-mail thru tor by torsocks - how?

[emninger at riseup.net]

Running claws-mail in manjaro i3 on a Sony Vaio i7

Although the instructions on torproject.org say claws-mail works with
tor (service), i'm unable to get it running thru tor.

Otoh, proxychains does the job. But as far as i read torsocks would be
to prefer over proxychains as a wrapper.

I've tor running at 127.0.0.1:9050

The error msg i get, when i try to start claws-mail via torsocks (by
'torsocks claws-mail') is:

'1523423670 WARNING torsocks[3605]: [syscall] Unsupported syscall
number 217. Denying the call (in tsocks_syscall() at syscall.c:488'

The torsocks.conf settings are (standard):
TorAddress 127.0.0.1
TorPort 9050
OnionAddrRange 127.42.42.0/24

The proxychains.conf settings are:
strict_chain
proxy_dns
remote_dns_subnet 224
localnet 192.168.10.0:80/255.255.255.0
socks5 	127.0.0.1 9050

After doing 'proxychains claws-mail' i get:
[proxychains] config file found: /etc/proxychains.conf
[proxychains] preloading /usr/lib/libproxychains4.so
[proxychains] DLL init: proxychains-ng 4.12
[proxychains] Strict chain  ...  127.0.0.1:9050  ...  mail.riseup.net

(i.e. all fine :) ).

Anyone out there has an idea?

Thanks a lot in advance!