My mistake...
2009-04-02 20:20:44.389619500 1998 Accepted connection 0/40 from 204.8.155.227 / planetlab-02.bu.edu
2009-04-02 20:20:44.389827500 1998 Connection from planetlab-02.bu.edu [204.8.155.227]
2009-04-02 20:21:59.399809500 1998 check_earlytalker plugin: remote host said nothing spontaneous, proceeding
2009-04-02 20:21:59.988401500 1998 check_badcountries plugin: GeoIP Country: US
2009-04-02 20:21:59.995707500 1998 220 my.foo.bah ESMTP
2009-04-02 20:22:00.138853500 1998 dispatching HELP
2009-04-02 20:22:00.139191500 1998 214-This is qpsmtpd
2009-04-02 20:22:00.139325500 1998 214-See http://smtpd.develooper.com/
2009-04-02 20:22:00.139456500 1998 214 To report bugs or send comments, mail to <ask@develooper.com>.
2009-04-02 20:22:00.272800500 1998 dispatching STARTTLS
2009-04-02 20:22:00.273115500 1998 count_unrecognized_commands plugin: Unrecognized command 'starttls'
2009-04-02 20:22:00.273448500 1998 500 Unrecognized command
2009-04-02 20:22:00.806339500 28208 cleaning up after 1998
2009-04-02 21:20:21.512127500 2910 Accepted connection 0/40 from 134.76.81.91 / planetlab1.informatik.uni-goettingen.de
2009-04-02 21:20:21.512345500 2910 Connection from planetlab1.informatik.uni-goettingen.de [134.76.81.91]
2009-04-02 21:21:36.521984500 2910 check_earlytalker plugin: remote host said nothing spontaneous, proceeding
2009-04-02 21:21:36.524386500 2910 check_badcountries plugin: GeoIP Country: DE
2009-04-02 21:21:36.531735500 2910 220 my.foo.bah ESMTP
2009-04-02 21:21:36.624850500 2910 dispatching HELP
2009-04-02 21:21:36.625180500 2910 214-This is qpsmtpd
2009-04-02 21:21:36.625313500 2910 214-See http://smtpd.develooper.com/
2009-04-02 21:21:36.625447500 2910 214 To report bugs or send comments, mail to <ask@develooper.com>.
2009-04-02 21:21:36.705641500 2910 dispatching STARTTLS
2009-04-02 21:21:36.705954500 2910 count_unrecognized_commands plugin: Unrecognized command 'starttls'
2009-04-02 21:21:36.706277500 2910 500 Unrecognized command
2009-04-02 21:21:37.683240500 28208 cleaning up after 2910
Both universities now filtered. Not a problem.
It's spam but of a type that I've not seen before now.
Don't feel that it is a bug, I'm not going to put spam into the Bugzilla.
For me SME Server 7.4 did the right thing, so it's OK to drop it.