Zenon Panoussis writes:
The same mail client and mail server were also IPv6-enabled a couple of months ago and this was not happening then. At that time, mozilla was 1.4.2 or 1.6 (not sure which), while courier and BIND were the same as now. This fact seems to point a finger at mozilla, but there are too many steps involved here, I can't figure it conclusively.
Waiting for this to be resolved I guess I'll go write ip6.int PTR records as a workaround...
couriertcpd does reverse DNS lookups in the ip6.int domain.
pgp1xruqteuTN.pgp
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