[TYPO3-shop] E-Mail validation / Missing Orders

[Uli Linn]

Hello everybody!

If there is a misspelling in a customeres email-adresse (like a ":" 
istead of a ".") the customer will get no order-confirmation - but:
Also no order mail is sent to the shopadmin. So the customer gets no 
error-message, but the shopadmin gets no order.

I can see the orders in the T3 Backend, but there is no mail telling me 
about the order.

I found this behaviour in tt_products 2.5, 2.6 and 2.7.

Is there any workaround to solve this problem? Or a possibility to 
(syntax-)validate email-addresses bevore sending the order-form?

Any ideas?

Uli