Below are the port numbers used by Mail2000 :
-
Inbound Connection Ports:
- Apache HTTP Web Service: 80 / 443
- SMTP: 25 / 465
- POP3: 110 / 995
- IMAP4: 143 / 993
- Chkusrd: 5123 (Used for Openfind SSO across products. If all products are deployed within an intranet, external access does not need to be enabled.)
-
Outbound Connection Ports:
- DNS: 53
- NTP Time Sync: 123 (TCP/UDP)
- SMTP: 25 (Required if sending emails directly to external addresses)
- HTTP: 80 / 443 (Used for push notification service and license verification)