Privacy-guarding email clients need TCP port 465 or 587, tor blocks both
Hi,
I am working on an email client. One of the (side) goals is to provide robust access to things like riseup.net, which means providing IMAP and SMTP/Submit access via Tor (and also doing some things to prevent information leakage).
The IMAP bits work well: I can access riseup via Tor with excellent performance, thanks to a little prefetching and so on. I also don't leak information. But I cannot send mail at all, in any way. AFAICT, it seems to be mostly a side effect: Tor blocks access to port 25 to combat spam and abuse, and ports 465/587 were blocked as part of the same change.
I find that very unfortunate. Blocking 465/587 means that there is no way to write a proper privacy-guarding email client using the IETF protocols. Please reconsider that.
Trac:
Username: arnt