def check_mailaddr( email ):

    """check_mailaddr --- Check the syntax of an email address format

    and return False if the syntax is bad and True if the syntax is good.

    (bool) bool check_mailaddr( (string) email )"""

    from re import compile, match

    regexp = compile( '^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,})$' )

    if regexp.match( email ) != None:

        return True

    else:

        return False