Classes of service using advanced queuing techniques.

[Julian Field]

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Errol Neal wrote:

>Thanks Julian. You are always very helpful.
>
>Last question. Is it possible to set  Incoming Queue Dir to
>/var/spool/mqueue.in.ciient1/* and /var/spool/mqueue.in.client2/*
>
>
I assume you are trying to say
/var/spool/mqueue.in.client1 (or the df and qf dirs inside them if they
exist)
and
/var/spool/mqueue.in.client2 (or the df and qf dirs inside them if they
exist)

In that case, set
Incoming Queue Dir = /var/spool/mqueue.in.client*
and it should all just work it out for you.

The comments for this option in MailScanner.conf say this (for your
reference :-)

# Set location of incoming mail queue
#
# This can be any one of
# 1. A directory name
#    Example: /var/spool/mqueue.in
# 2. A wildcard giving directory names
#    Example: /var/spool/mqueue.in/*
# 3. The name of a file containing a list of directory names,
#    which can in turn contain wildcards.
#    Example: /opt/MailScanner/etc/mqueue.in.list.conf
#
# If you are using sendmail and have your queues split into qf, df, xf
# directories, then just specify the main directory, do not give me the
# directory names of the qf,df,xf directories.
# Example: if you have /var/spool/mqueue.in/qf
#                      /var/spool/mqueue.in/df
#                      /var/spool/mqueue.in/xf
# then just tell me /var/spool/mqueue.in. I will find the subdirectories
# automatically.

P.S. you should drop in on Steve Swaney at Fortress Systems for a
coffee. He's 2.67 miles away from you :-)

>-----Original Message-----
>From: MailScanner mailing list [mailto:MAILSCANNER at JISCMAIL.AC.UK] On
>Behalf Of Julian Field
>Sent: Wednesday, December 15, 2004 4:06 PM
>To: MAILSCANNER at JISCMAIL.AC.UK
>Subject: Re: Classes of service using advanced queuing techniques.
>
>This is probably one for me :-)
>
>You need to call your dx and qx directories df and qf, but otherwise the
>latest version will do this. If you tell it the incoming queue dirs are
>/var/spool/mqueue/* then it should do the rest of the incoming side
>automatically for you.
>
>On the outbound side, you need to say
>
>return '/var/spool/mqueue.outbound.fast' if $messages->{fromdomain} =~
>/veryimportantclient\.com/i;
>
>In a reasonable size queue, it will work on the messages in strict date
>order. If the queue starts to get very large, it will temporarily
>abandon this sorting as it gets very expensive in most filesystems when
>directories get large. Instead it will start on the first ones it reads
>in the directory, as this is a lot faster. Once the queue has got small
>enough, it stays in this mode for a while longer to get the queue clear
>if at all possible, then it will revert to normal date-order processing.
>
>Inevitably, this is all configurable.
>
>Hopefully that answers most of your questions :)
>
>Errol Neal wrote:
>
>
>
>>Hi everyone. Been a long time since I posted to this list since I
>>switched jobs. Happy holidays and hope everyone is doing well.
>>
>>I've been looking into implementing a hierarchy of service levels for
>>mail delivery using the queuing capabilities of Sendmail and the
>>multiple outbound queue groups found in the custom functions of
>>MailScanner. What I'd like to do on the inbound side is to drop mail in
>>
>>
>
>
>
>>one of several queues based upon the recipient domain and other stuff.
>>This capability is already available to me through the use of the
>>extended queue groups. So, to realize my ambitions, I'd like
>>MailScanner to do the following:
>>
>>1. Pick up mail dropped in multiple queues/*
>>
>>Since the dx and qx files will be split into separate directories, I
>>need to know if MailScanner can handle this. The directory structure
>>will be something like this
>>
>>                       /var/spool/mqueue
>>                                               /highpriority
>>
>>/dx
>>
>>/qx
>>                                               /lowpriority
>>
>>/dx
>>
>>/qx
>>
>>2. Drop processed mail into multiple outgoing queues.
>>
>>I'm already using the feature &MultipleQueueDir to drop spam into a
>>slow queue, however I want to prioritize outbound mail on the basis of
>>it's final destination as well. Now I've tried using the following in
>>CustomConfig.pm:
>>
>>                       return '/var/spool/mqueue.outbound.fast'
>>if $messages->{fromdomain}, veryimportantclient.com;
>>
>>However, that did not work (If you are laughing at me, please do not..
>>I have very little programming ability). Now, when I say "it did not
>>work", I did not get an error and the queue was actually used, however
>>the messages that went into the queue were not those that I wanted to.
>>
>>Is what I want to do possible? Secondly, does how does MailScanner
>>determine which message to process first in a batch of say 100
>>
>>
>messages?
>
>
>>Is it FIFO based upon the time stamp on the file, or does it honor the
>>message priority assigned to the queue file by sendmail?
>>
>>Thanks in advance.
>>
>>Errol Neal
>>
>>__________________________________________
>>Errol Uriel Neal Jr.
>>Network Administrator
>>DFI International, Inc.
>>1717 Pennsylvania Ave NW, Suite 1300
>>Washington, DC  20006
>>Tel (202)452-6955
>>Fax (202)452-6910
>>Eneal at dfi-intl.com
>>www.dfi-intl.com
>>
>>

--
Julian Field
www.MailScanner.info
Buy the MailScanner book at www.MailScanner.info/store
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