Email validator and report why?

[OspreyO]

I'm tweaking some email validation code and can't see why its rejecting some emails. So I'd to check it with something else. But I don't just want to know that its valid/invalid but the reason why?

Anyone know a tool online/offline that does this?

 

[OspreyO]

Its a MS SQL function. I'm cleaning up a database.

http://www.databasejournal.com/scripts/article.php/3089661/Email-Validation-Function.htm

Its triming leading and trailing spaces but not some trailing white space that must have some other ASC charachters. Hard to give an example as I don't know what causing it, and I can't give you the specific email address. But its something like [email protected] which is coming back as invalid but it isn't. Don't know if theres something else causing it either.

Some of the online checkers of Email are telling me some email addresses I try are invalid, when I know they are ok, so hard to trust them. None tell you why an email fails either.

 

[OspreyO]

I think the problem is blank spaces which are different asc char from a space.