[Mimedefang] MD and Postfix: can't read SMFIC_OPTNEG reply packet header

Stefan König nme at nme.kicks-ass.net
Thu Apr 29 06:58:20 EDT 2010

Stefan König schrieb:
> Hi list,
> I have a set-up a new machine with MD 2.68, SA 3.3.1 and Postfix 2.6.1.
> >From time to time I get an error in the mail logs like this on a
> connecting client:
> postfix/smtpd[22871]: warning: milter
> unix:/var/spool/MIMEDefang/mimedefang.sock: can't read SMFIC_OPTNEG
> reply packet header: Connection reset by peer
> postfix/smtpd[22871]: warning: milter
> unix:/var/spool/MIMEDefang/mimedefang.sock: read error in initial handshake
> Afterwards, with _all_ the following client connections I get this error:
> postfix/smtpd[23199]: warning: connect to Milter service
> unix:/var/spool/MIMEDefang/mimedefang.sock: Connection refused
> The socket still exists, the rights are correct. I have to restart MD to
> get the whole system working again.
> On another system with MD 2.67 and the same Postfix version this does
> _not_ happen.

FYI: I switched from using unix sockets to inet sockets, same problem.
MD 2.68 just dies silently without a message.
Multiplexor seems to be running, but the listening socket just disappeared.

I switched back to MD 2.67 and keep monitoring the system.
I am not quite sure, could this be a bug in 2.68 ?


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