> Loop over 500 records with a X minute interval? Or is there a better way
I have overseen?

Hello Taco,

We don't use CFMAIL for our mailouts (we regularly mail out over 4000
email each burst) and have devised our own background process to do this.

We also store all the individualised mails (minus attachments - which we
store and record the path) in our database.  This gives us a complete
track of the emails as well as the ability to resend dead email (from a
dead email queue [table]).

We then let a background process (which in our case is a PERL script)
deliver the emails by reading records from the database and then calling
SENDMAIL directly.

You could modify this concept and use CFMAIL in a background task instead.

I believe that CFMAIL in CFMX 6.1 is able to handle bulk emails better
than previous versions - but we have looked at that technology and decided
to stay with the solution we have.  This is because our solution is much
more scalable (we can run multiple tasks across multiple file servers and
multiple mail servers).  You could also do this with CFMAIL - by having
multiple Cold Fusion boxes and setting them to different mail servers -
but the PERL script we developed can automatically failover in case of a
mail server outage - Cold Fusion would not be able to do that.  And, you
would have to be running Cold Fusion on each box.  We can run the PERL
script on any server (or PC for that matter) that has access to the
necessary shares and ports in our internal network.

Once we have the information in the database, we can throttle our mail
script as well as control priority.

We recently did a mailing to all 20,000 members of our web client base,
set it to a low priority, throttled the mails to 20 per minute, and had
the delivery completed within about 30 hours (without triggering any SPAM
black lists and without any perceived bottlenecks for "normal" web
emails).


Gary Menzel
Web Development Manager
IT Operations Brisbane -+- ABN AMRO Morgans Limited
Level 29, 123 Eagle Street BRISBANE QLD 4000
PH: 07 333 44 828  FX:  07 3834 0828


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