issue2551186 - replace socket.sslerror in mailgw.py. roundup/mailgw.py: replaced socket.sslerror with anypy/ssl_.SSLError also looks like a socket.sslerror was removed from pops handling. added it back using method above. roundupanypy/ssl_.py: defines replacement SSLError suitable for python2 or 3 tested by running nc -lp 995 or 993 (pop3s/imaps) and sending gibberish when mailgw connects. This generates a bad version number SSLError. I need to get my imap and pop mock servers included for testing at some point, but I am not sure how to make them bind to the right port as they are priv ports.

try:
    from html import escape as html_escape_  # python 3

    def html_escape(str, quote=False):
        # html_escape under python 3 sets quote to true by default
        # make it python 2 compatible
        return html_escape_(str, quote=quote)
except ImportError:
    # python 2 fallback
    from cgi import escape as html_escape  # noqa: F401