On 2020-02-21 09:42, Cyborg via Exim-users wrote:
i have a ipv6 ip running, which starts with 2a02:....

as soon as i set a "interface = 2a02:........."  in the remote
transport, it get this:

R=remoteusers T=remote_smtp defer (-1): "2a02" is not a valid IP address
for the "interface" option for remote_smtp transport

exim cuts the ip to the first block.

Is there any special syntax for ipv6 ips to give in that option or do we
need BOTH, an ipv4 and an ipv6 ip together on a 4/6 system?

Yes, you'll have that issue anywhere you're using IPv6 addresses in the configuration:

<quote source="https://www.exim.org/exim-html-current/doc/html/spec_html/ch-starting_the_daemon_and_the_use_of_network_interfaces.html";> The default list separator in both cases is a colon, but this can be changed as described in section 6.21. When IPv6 addresses are involved, it is usually best to change the separator to avoid having to double all the colons.
</quote>

Which approach you take is up to you.

Regards,

Adam

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