Largest volume
(deliveries per day, flat monthly average)

787,999

JISCMAIL.AC.UK

• 2.3GHz Xeon E5-2673 v4 HT 256k (8192M)
• Windows Server 2019 Standard x64 Edition
• Postfix

Largest number of subscribers
(all lists on this server)

5,238,038

LISTS.PSU.EDU

• 16-CPU 2.4GHz Xeon Gold 6148 (32064M)
• Linux 3.10.0-1160.36.2.el7.x86_64
• sendmail 8.15.2/8.15.2

Largest number of lists

27,853

LISTES.ULAVAL.CA

• 2-CPU 2.5GHz Xeon (3840M)
• Linux 3.10.0-1160.31.1.el7.x86_64
• sendmail 8.14.7/8.13.8

Largest mailing list
(number of subscribers)

59,191

CAREERCENTERUPDATE@LISTSERV.UGA.EDU

• 2-CPU 2.6GHz Xeon (7872M)
• Windows Server 2016 Datacenter x64 Edition
• envelope-from <>