On Mar 20, 2016 01:09, "Dmitrii Golub" <dmitrii.go...@gmail.com> wrote: > > 2016-03-14 16:22 GMT+03:00 Shulgin, Oleksandr < oleksandr.shul...@zalando.de>: >> >> In fact, the 123-yyy.zzz domain is not valid either according to the RFC (subdomain can't start with a digit), but since we already allow it, should we not allow 123_yyy.zzz to be recognized as a Host? Then why not recognize aaa@123_yyy.zzz as an email address? >> >> Another option is to prohibit underscore in recognized host names, but this has more breakage potential IMO. >> > > Alex, actually subdomain can start with digit,
Not according to the RFC you have linked to. > try it. What do you mean? Try it with ts_debug()? I already did, you could see me referring to this example above: 123-yyy.zzz -- Alex
