Hi Anders,
El 2013-09-11 09:41:42, Anders escribió: > Can we make courier force the use of the highest protocol available? Is > that what the "%SERVER_PRECEDENCE" option is for? On reception of e-mails you can force this by that token. (If your GnuTLS implementation is new enough.) On sending e-mails it won't help. Gmail is the server in that case and has the right to select the cipher. In that direction it only helps to not tell Gmail, that you support some other cipher. > A side note, I wonder why courier doesn't use IPv6 by default? +1 (Me and others already asked for that as well.) As I remember, Sam doesn't like this idea very much. I tried some patching of the code myself. But even if you change the preference in the code, you will often get IPv4 connections instead of IPv6 ones. The reason is, that often there are A records in the resolver cache after resolving MX records. You whould have to ignore these hints and force a AAAA resolving if no such records are known before. (Which will result in higher latency and more DNS load.) Regards, Matthias -- Matthias Wimmer Contact details: http://matthias.wimmer.tel/
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