pjeby
commented
4 years ago As of d907720cd, I've added support for multiple IP addresses (possibly including IPv6), so be sure to pull the latest image before testing.
All I've done at this point is confirm that all addresses listed in DNS for the hostname are listened to (and no others), and that the first such address is used for outgoing connections, unless overrridden via the OUTBOUND_MAIL_IP environment variable. So you should be able to use IPv6, pending testing, but you will still need to choose one address (either IPv6 or IPv4, but not both) for outgoing mail to "come from".
You forgot to include a description of what you want. In principle, the container should work with IPv6, provided that the container hostname maps in DNS to exactly one IPv6 address, and no other addresses (i.e., no IPv4 addresses). Have you tried that yet?
As far as I can tell, such a configuration should work just fine; I simply haven't tested it, because I don't currently have any use cases for IPv6.
Now, if you want to support using IPv6 and IPv4 at the same time then I'm not sure how well that will work with the current codebase. But in order to proceed any further, I would need for you to actually provide information on what did and did not work with such a scenario. At this point, it is unclear to me if you have even tried anything at all, let alone what happened when you did.
Anyway, it's generally polite when filing bug reports or feature requests with an open source project to include a detailed description of what you are asking for, including details about what you've tried, what result you got, and what results you were expecting. Without it, it may be impossible for them to even understand what you're asking for, let alone have any possibility of providing it.