Proxy problem: "imap-login: Error: proxy(USERNAME): connect(10.x.x.178, 993) failed: Cannot assign requested address (after 0 secs, local=10.x.x.104)"

brd barraudu at
Tue Oct 21 16:00:37 UTC 2014

Ralf Hildebrandt wrote:
> We already optimized:
> ---- snip ----
> net.ipv4.tcp_fin_timeout=5
> # down from 30s
> net.ipv4.tcp_tw_reuse=1
> net.ipv4.tcp_tw_recycle=1
> #

just a note on enabling tcp_tw_recycle, it is known to have side-effects
and issues when you have lots of connections from the same source IP, such
as many clients behind same NAT IP or a reverse proxy



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