4 ms·I Knew How to Validate an Email Address Until I Read the RFC (2007)2 points by 0xedb 5y agobombcar 5y agoThe only reasonable way to validate an email address is send an email to it. I also suspect you can check it has at least one @ sign.Ekaros 5y agoI suppose the part after right most @ sign must resolve to valid domain. Other than that, yeah not much you can do...bombcar 5y agoOr an IP address perhaps or even IPv6? I wonder if root@localhost is a valid email address …Ekaros 5y agoTrue it can be IP or even localhost... Actually if you are in intranet even valid hostname...bombcar 5y agoSeems . has only NS records and no A or MX, too bad: .@. probably won't receive email.