True. I run into email validation problems constantly. I have a two-part first name that has "-" in the middle, so my firstname.lastname email addresses (usually work addresses) always have a "-". In addition at the moment I'm a consultant in a large company, where they put "ext-" in front of everyone who is not employed by them but works for them and has an email account from them. I also often run into problems with length, because my name is 19 characters and the last place I worked for had a 15 character company name and when you add TLD to that, you sum to an email address that is 39 characters long, which for some seems to be too much. I really don't get why you would use only 32 characters to store an email address..
This problem very often bites in name fields, too, that don't accept "-" and two capital letters in my first name.
And I used to live near a border of two cities, where my postal address was from one city while my real city of residence was the other one. I have had a lot of problems with that, when the guys who made the systems were trying to deduce my city of residence from my postal address. Which is also impossible in my country, because the national post office also permits addresses that have postalnumber + company (instead of city) for large companies who take their mail in one place and deliver it themselves the rest of the way.
