CiviMail sending halts when invalid e-mail address confronted

We have imported data that included invalid e-mail addresses that were accepted by CiviCRM including email@h-.com.au and and address that was "address@domain\com" instead of "address@domain.com". When a CiviMail mailing was sent to a group that included these addresses, the sending stopped whenever it hit such an address with the mail log showing:

Apr 29 19:33:33 serverXYZ postfix/smtpd[16649]: warning: Illegal address syntax from serverXYZ.domain.com.au[127.0.0.1] in RCPT command: <email@h-.com.au>;

CiviMail should be able to detect the problem and keep sending the mailing to other valid e-mail addresses.