6 messages in net.sourceforge.lists.courier-sqwebmailRe: [sqwebmail] using sqwebmail in China
FromSent OnAttachments
timNov 21, 2006 6:07 am 
Sam VarshavchikNov 21, 2006 3:57 pm 
ti...@ebi.xs4all.nlNov 21, 2006 11:03 pm 
Brian CandlerNov 22, 2006 12:36 pm 
ti...@ebi.xs4all.nlNov 22, 2006 2:01 pm 
Brian CandlerNov 23, 2006 12:42 pm 
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Subject:Re: [sqwebmail] using sqwebmail in ChinaActions...
From:Brian Candler (B.Ca@pobox.com)
Date:Nov 23, 2006 12:42:49 pm
List:net.sourceforge.lists.courier-sqwebmail

On Wed, Nov 22, 2006 at 10:02:04PM +0000, ti@ebi.xs4all.nl wrote:

it does run over https. it was compiled in the FreeBSD ports with https only.

OK, so what you're saying is:

- https works in China - but sqwebmail over https doesn't work in China

I would hazard a guess that if you move your server outside of China it still won't work; or that other https applications on the same server will also fail.

Note: MTU issues can cause "blank screens" and timeouts, e.g. using PPPoE gives you an MTU of 1492 instead of 1500. If you don't have clear end-to-end ICMP, then path MTU discovery won't work. The symptoms are that small packets and small web pages work fine, but large ones don't.

You could write yourself a CGI in Perl (say), which accepts a 10KB POST body and spits out 10KB of HTML. If that also freezes, then you've eliminated sqwebmail as the source of the problem.

Regards,

Brian.