[exim-dev] [Bug 2402] IPv6 verify

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Autor: admin
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Dla: exim-dev
Temat: [exim-dev] [Bug 2402] IPv6 verify
https://bugs.exim.org/show_bug.cgi?id=2402

--- Comment #2 from Bjoern Jacke <bjoern@???> ---
I found the reason for this helo validation failure. I added a while ago this
line:

dns_ipv4_lookup = *.freenet.de

to the exim.conf because there was a issue with the remote MTAs of that
provider making forward-confirmed reverse DNS checks which failed with the
IPv6 addresses that where used by exim from our site.

While for outgoing mail dns_ipv4_lookup can be helpful I think for helo
verification dns_ipv4_lookup needs to be ignored because we are not able to
influence if a certain remote site uses v6 or v4 to deliver mail to us.

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