1 # domain literals (IPv6)
4 exim -bt x@[abcd::dcba] x@[IPv6:cba::abc]
6 exim -DD6=disable_ipv6 -bt x@[abcd::dcba] x@[IPv6:cba::abc]
11 RCPT TO:<x@[3ffe:ffff:836f:0a00:000a:0800:200a:c031]>
12 RCPT TO:<x@[ipv6:3ffe:ffff:836f:0a00:000a:0800:200a:c031]>