Port numbers for secure communciations
All K-State e-mail access requires the use of secure communications protocols. This means all local clients must be configured to utilize either SSL or TLS settings on the ports shown below.
Note: all the configurations will work with the legacy K-State e-mail environment and the new K-State Zimbra e-mail system.
Authenticated SMTP
| DNS Address |
Port |
Protocol |
| auth.smtp.ksu.edu |
25 |
Require TLS |
| auth.smtp.ksu.edu |
465 |
SSL |
| auth.smtp.ksu.edu |
587 |
Require TLS |
| auth.smtp.k-state.edu |
25 |
Require TLS |
| auth.smtp.k-state.edu |
465 |
SSL |
| auth.smtp.k-state.edu |
587 |
Require TLS |
IMAP
| DNS Address |
Port |
Protocol |
| imap.ksu.edu |
143 |
Require TLS |
| imap.ksu.edu |
993 |
SSL |
| imap.k-state.edu |
143 |
Require TLS |
| imap.k-state.edu |
993 |
SSL |
POP
| DNS Address |
Port |
Protocol |
| pop.ksu.edu |
110 |
Require TLS |
| pop.ksu.edu |
995 |
SSL |
| pop.k-state.edu |
110 |
Require TLS |
| pop.k-state.edu |
995 |
SSL |
Zimbra desktop client
| DNS Address |
Port |
Protocol |
| webmail.ksu.edu |
443 |
SSL |
| webmail.k-state.edu |
443 |
SSL |
Web browser
| DNS Address |
Port |
Protocol |
| https://webmail.ksu.edu |
443 |
SSL |
| https://webmail.k-state.edu |
443 |
SSL |