On Thu, 9 Mar 2006, DOLIST Technical Center wrote:
> I want to submit a problem I just try to understand and solve.
> We have here 3 massive post servers under XMAIL servers WS2003.
> We send around 1.5M messages with them each day.
>
> I've used zinc for customizing retries for our needs with:
>
> D:\dev\mail\xmail utility\zinc>zinc 400 1 11
> 01 send-time = 0 next-try = 400 @ 0 days 00 hours 00 minutes
> 00 seconds.
> 02 send-time = 400 next-try = 800 @ 0 days 00 hours 06 minutes
> 40 seconds.
> 03 send-time = 1200next-try = 1600 @ 0 days 00 hours 20 minutes
> 00 seconds.
> 04 send-time = 2800next-try = 3200 @ 0 days 00 hours 46 minutes
> 40 seconds.
> 05 send-time = 6000next-try = 6400 @ 0 days 01 hours 40 minutes
> 00 seconds.
> 06 send-time = 12400 next-try = 12800 @ 0 days 03 hours 26 minutes
> 40 seconds.
> 07 send-time = 25200 next-try = 25600 @ 0 days 07 hours 00 minutes
> 00 seconds.
> 08 send-time = 50800 next-try = 51200 @ 0 days 14 hours 06 minutes
> 40 seconds.
> 09 send-time = 102000 next-try = 102400 @ 1 days 04 hours 20
> minutes 00 seconds.
> 10 send-time = 204400 next-try = 204800 @ 2 days 08 hours 46
> minutes 40 seconds.
> 11 send-time = 409200 next-try = 409600 @ 4 days 17 hours 40
> minutes 00 seconds.
>
> Yesterday for another reason I grep XMAIL logs for 15 emailing
> campaigns, then I found strange results, we still successfully SMTP
> after the 4 days announced by ZINC. Here are the results:
>
> 20060301404339174091
> 20060302400 336 342
> 200603030 0 1
> 20060304285 169 188
> 200603050 0 0
> 20060306112 972 900
> 200603070 0 0
>
> First column is the date. Third ones are the 3 post servers SMTP
> results, and I still get SMTP after 6 days. This exactly the same for
> all the 15 campaigns.
>
> I need to precise, if it can helps:
>
> - each campaign are marked with one ID in our mail-from so it can
> be twice the same line.
> - We automatically restart XMAIL every 24 hours, stopping it normally
> in a batch, then start it with:
> net stop "Xmail Server"
> net start "Xmail Server"
> - Out registry entry is:
> -Qn 256 -Ql -Ll -Ql -Sl -Sp 25 -Qt 400 -Qi 1 -Qr 11 -Ln 14
Well, XMail tries to respect the schedule, but if you send bazillions of
messages per day, it is likely that the SMAIL threads are all busy so the
schedule gets slightly delayed.
- Davide
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