I have no experience with Listserv rate limiting because we avoid the problem with networking and mail system configuration that includes a mail server ready to accept bulk deliveries. On the multiply by 100 issue, ... If your list is configured with "Mail-merge= yes", then Listserv generates a piece of mail for each of your 70,000 recipients. Otherwise, Listserv creates batches that are then sent to the mail system. 100 is a typical batch count, but your server could be setup with a different value. My server is setup for 250, because I know my mail servers will accept batches of up to that size. ... and fewer batches means more efficient operation. Cheers, Wayne On Sep 2, 2015 10:19 AM, "Margaret King" <[log in to unmask]> wrote: > Greetings Listserv admins, > > We are running Listserv 15.5 and are thinking of employing rate limiting, > and are having difficulty picking a number. Here are the numbers we do know: > > Our largest list, comprising all faculty, staff and students, has roughly > 70000 subscribers. After someone sent an 8M message to it we put on a size > limit of 1 megabyte. > > Our VMWare guru (Listserv is running in a virtual machine) tells me that > pver the last day the peak outbound SMTP was about 2.5 megabytes per > second. This would seem to suggest that the 12 mega-BITS per second given > in the example in Lsoft's description of the feature would be about right > to cut that peak in half. Maybe even less since it really was an isolated > spike. Maybe 8.... > > However reading further I see that for purposes of this feature Listserv > counts the size of messages by multiplying out the number of recipients. > Given that the peak our VM guru saw would have been data packed into BSMTP > batches of 100 recipients, does that mean we need to multiply that number > by about 100? > > Margaret King > IT Services - Messaging > Michigan State University > Office: 517-432-7324 > [log in to unmask] > > ############################ > > To unsubscribe from the LSTSRV-L list: > write to: mailto:[log in to unmask] > or click the following link: > http://peach.ease.lsoft.com/scripts/wa-PEACH.exe?SUBED1=LSTSRV-L&A=1 > ############################ To unsubscribe from the LSTSRV-L list: write to: mailto:[log in to unmask] or click the following link: http://peach.ease.lsoft.com/scripts/wa-PEACH.exe?SUBED1=LSTSRV-L&A=1