Hi mailman-users@ When I created a petition signature collection site, mailman worked fine for my small list: http://mailman.berklix.org/mailman/listinfo/votes-sign

Others since on this list asked if Mailman can support large lists (real mail lists, not petition signature lists as I unusually used Mailman for), (with answers inc. "How long's a piece of string?", aka "What's your back end SMTP capability?" etc).

I can't provide insight on Mailman loads, but see a custom big petition list just crashed under load (no idea what software & hardware), https://petition.parliament.uk/petitions/241584 was crashing repeatedly this morning https://www.bbc.com/news/uk-politics-47652071 my brother wrote me Thu, 21 Mar 2019 10:32:02 +0000 "it was going up by over 100,000 per hour earlier today" I'v seen: 43,676 signatures @ Wed, 20 Mar 2019 17:10:10 +0100 947,303 signatures @ Thu Mar 21 15:06:31 CET 2019 A load of about a million addresses with confirmation mails a day. BTW The "Show on a map" links to another site https://petitionmap.unboxedconsulting.com/?petition=241584 presumably that avoids extra load on signature site, nice functionality, but beyond remit for us on mailman-users@.

Cheers, Julian

Julian Stacey, Consultant Systems Engineer, BSD Linux Unix, Munich Aachen Kent Brexit now minority: 2.1 M now over 18, More Remainers; 1.5 M died, less Leavers; 700 K votes Stolen from British Remainers in EU; + 3 M globaly dis- franchised; + drift to Remain + avoid chaos. MPs should urge Queen: Dismiss May, appoint new PM for unity government & 2nd Referendum. Revoke Art. 50, plan better, refile Art.50 later? http://ExitBrexit.UK/#email_an_mp