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Kansas State University

IT Help Desk
Kansas State University
214 Hale Library
Manhattan, KS 66506
785-532-7722
800-865-6143 (toll-free)
helpdesk@k-state.edu
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  5. Port numbers for secure communications

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