Tor Circuit Question

[Ringo Kamens]

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Hey Torland,

I've got a question about the way Tor chooses circuits. Sometimes I use
Thunderbird to send mail via Tor (yeah, I know, DNS leaks) and I notice
some interesting behaviour.

It's my understanding that when Tor receives a request for a port that
the current circuits don't allow (like SMTP), it creates a new circuit
for it. I notice that I can keep trying to send mail for like half an
hour (once a minute) before it finally goes through. What's interesting
is that if I restart Tor and make that request right when it starts up,
it almost always goes through without any difficulty. I'm not bandwidth
limited so it's not like the other circuits are eating all my bandwidth.

Does anybody else experience similar behaviour? Any possible explanations?

Thanks,
Ringo
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