>The database was An Access DB. Connection to mail server is T1.
It will be very easy to saturate a T1 with a 500K mailshot. There will have to be careful, ie, tedious, tuning to rate-limit the mailshot so the T1 is not saturated, does not drop packets due to congestion, and allows SMTP and DNS traffic to progress without fatal delays. 500 k mgs x 10 k bytes = 5000 kk bytes (if you want to us HTML mail, you'r probably looking at 30 kbytes/msg. HTML mail is expensive in bandwidth) A T1 is roughly 175 kbytes/sec 5000 kk bytes / (175 k bytes/sec) = 29 k secs 29 k sec / 3.6 k secs/hr = 8 hours with the line unuseably saturated. You probably want to keep your T1 line at about 50 to 60% on average, meaning your mail shot will take 16 to 20 hours on a T1. Len http://MenAndMice.com/DNS-training http://BIND8NT.MEIway.com : ISC BIND 8.2.4 for NT4 & W2K http://IMGate.MEIway.com : Build free, hi-perf, anti-abuse mail gateways Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
