[Mimedefang] Debian squeeze postfix mimedefang

David F. Skoll dfs at roaringpenguin.com
Wed Jun 15 18:30:25 EDT 2011

On Wed, 15 Jun 2011 22:54:42 +0200
Michiel Brandenburg <apex at xepa.nl> wrote:

> I have seen this problem too, I have looked at the code and it seems 
> that there is a delay between the creation of the socket (using 
> smfi_setconn mimedefang.c line 2442) and exit of the parent process 
> after daemonizing. Could it be that the smfi_setconn only indicates
> the intent to create the socket and does not do the actual socket
> creation itself ?  Just theorizing here mind you.

That's the case.  Newer versions of the milter library have a
smfi_opensocket function to cause the socket to actually be
created.  (https://www.milter.org/developers/api/smfi_opensocket)

I can have MIMEDefang call smfi_opensocket if it's compiled against
a version of milter that has it.

> A better fix might be to let the parent process exit only when the 
> socket has been created, don't know if this is a wanted feature but
> it might be the best solution.

I think it is.  Polling for the socket once every 200ms or so from the
parent and exiting if it doesn't appear within 5 seconds makes sense.
I will look at making those changes.



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