Re: Router locking mechanism breaks

[Matti Aarnio <mea@utu.fi>]

> Hi,
> 
> ZMailer router 2.99.38 on SunOS 5.5 --with-bundled-libresolv --with-gcc 
> compiled option.
> 
> Intermittently, we found 2 routers processing the same message file and
> produced duplicate mail.   From the /var/log/mail/router,  I found that
> 
> <"message ID ....">: file: 102429-17756 <xxx> => ....
> <"message ID ....">: file: 102429-17757 <xxx> => ....
> 
> almost logged at the same time.  It seems that the multi-router locking
> mechanism "inode-pid" breaks.  Actually, I don't know whether it helps,  but
> most of the incidents found are submitted by smtpserver.  The problem was
> found in 2.99.26 and that's why we upgraded to 2.99.38, but the problem still
> not solved.  ;(

The reason for this breakage may become revealed with following:
	zmailer-src> egrep RENAME config.h

If it is: "#define HAVE_RENAME 1"  then I am rather mystified.

> Moreover, the IDENT module on 2.99.38 smtpserver is not working.  The logfile
> always logged "connection from UNKNOWN@xxxx ..." even though the connecting
> hosts has "in.identd" enabled.  In contrast, 2.99.26 smtpserver has no such
> problem.   I notice some function naming changed for "libauth" to "libident"
> in somewhere between #26 to #38.   Is that the problem?   Actually, I tried
> #34 smtpserver and found not working as well.

	Ah, that was a tough nut to crack.

	At  smtpserver there are TWO calls of:
		setrfc1413ident(0);
	change the SECOND one to:
		setrfc1413ident(msgfd);

> =======================================================================
> Lai Yiu Fai                       |  Tel.:       (852) 2358-6202
>  & Telecommunications             |  E-mail:     ccyflai@uxmail.ust.hk

	/Matti Aarnio <mea@utu.fi> <mea@nic.funet.fi>