Changing temporary errors to permanent errors

Hello,

my organization has introduced filesystem quotas that are
proving to be 
somewhat problematic for our students because, when they go
over their 
quota limits, maildrop reports a temporary error and their
email will 
sit on the queue for days before bouncing back to the user.
See the 
error message from mailq:

(temporary failure. Command output: maildrop: error writing
to mailbox.)

How can I make maildrop report this as a permanent failure
so that 
Postfix will immediately bounce the message back to the
sender? Also, is 
there a way to give an informational message back to the
sender to let 
them know this user is over their quota?

Thanks to any and all who may be of assistance,

Gordon

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Gordon Thagard writes:

> Hello,
> 
> my organization has introduced filesystem quotas that
are proving to be 
> somewhat problematic for our students because, when
they go over their 
> quota limits, maildrop reports a temporary error and
their email will 
> sit on the queue for days before bouncing back to the
user. See the 
> error message from mailq:
> 
> (temporary failure. Command output: maildrop: error
writing to mailbox.)
> 
> How can I make maildrop report this as a permanent
failure so that 
> Postfix will immediately bounce the message back to the
sender? Also, is 
> there a way to give an informational message back to
the sender to let 
> them know this user is over their quota?
> 
> Thanks to any and all who may be of assistance,

The two ways to do this are:

1) Wrap all the to and cc commands inside an exception {}
block, and 
explicitly set EXITCODE to a permanent error code, or

2) Wrap the invocation of maildrop, rather than setting a
plain 
/usr/bin/maildrop, or whatever, as your mail delivery agent,
use something 
like "/usr/bin/maildrop || exit 77".  That'll turn
all temporary errors into 
permanent ones, not just out of quota

As far as a custom message goes, you'll have to use #1, and
provide some 
additional hackery using the echo command.



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On Tue, Apr 17, 2007 at 10:45:54AM -0400, Gordon Thagard
wrote:
> my organization has introduced filesystem quotas that
are proving to be 
> somewhat problematic for our students because, when
they go over their 
> quota limits, maildrop reports a temporary error and
their email will 
> sit on the queue for days before bouncing back to the
user. See the 
> error message from mailq:
> 
> (temporary failure. Command output: maildrop: error
writing to mailbox.)
> 
> How can I make maildrop report this as a permanent
failure so that 
> Postfix will immediately bounce the message back to the
sender? 

--- courier-0.53.3/maildrop/deliver.C   2006-05-28
17:29:52.000000000 +0200
+++ courier-0.53.3_NEW/maildrop/deliver.C      2006-12-25
13:15:00.000000000 +0100
 -160,7
+160,7 
                        maildrop.msgptr->MessageSize())
< 0)
                {
 #if HAVE_COURIER
-                       throw 75;
+                       throw 77;
 #else
                        throw 77;
 #endif


> Also, is 
> there a way to give an informational message back to
the sender to let 
> them know this user is over their quota?

/etc/postfix/master.cf:   ... argv=/usr/bin/maildrop -w 80
-d $

/etc/courier/quotawarnmsg

-- 

5o   Peter.Mann at tuke.sk



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