UCO/Lick provides e-mail services unique to our organization, in addition to the e-mail services provided by the UCSC campus. Our local e-mail service is contingent upon the user having an active user account with UCO/Lick.
Various components of the UCO/Lick e-mail services are broken out as follows:
Sending e-mail
Access to outbound e-mail services are as follows:
Host name: |
Port number: |
Services offered: |
smtp.ucolick.org |
25 |
SMTP, SMTP over TLS, authenticated SMTP |
smtp.ucolick.org |
465 |
SMTP over SSL (smtps), authenticated SMTP |
smtp.ucolick.org |
587 |
SMTP, SMTP over TLS, authenticated SMTP |
Using encryption
Three different types of encryption are available for sending e-mail: no encryption at all, TLS, and SSL. It is strongly recommended that you enable TLS or SSL whenever possible; if you have a choice between the two, use TLS.
TLS and SSL encryption are mutually incompatible. You can only use SSL on port 465; you cannot use SSL on either of the other two ports. Likewise, you can only use TLS on ports 25 and 587, you cannot use it on port 465.
Authenticated SMTP
All outbound e-mail services are capable of using authenticated SMTP to verify your identity before sending the message. It is recommended that you always configure your mail client to use authenticated SMTP whenever you have it available.
If you want to use the UCO/Lick mail servers to send e-mail when you are not on the UCO/Lick network, you must use authenticated SMTP. If you are not on the UCO/Lick network and you do not use authenticated SMTP, you will only be able to send e-mail to @ucolick.org e-mail addresses; messages to all other recipients will be rejected.
In order to use authenticated SMTP, you must know your e-mail password.
Receiving e-mail
The two available protocols for receiving e-mail are IMAP and POP. In general, we find that IMAP-based services are less demanding for both the user and the system administrators.
In order to receive e-mail, you must know your e-mail password.
Access to the two services are broken out as follows:
Host name: |
Port number: |
Services offered: |
imap.ucolick.org |
143 |
IMAP, IMAP over TLS |
imap.ucolick.org |
993 |
IMAP, IMAP over SSL (imaps) |
pop.ucolick.org |
110 |
POP (pop3), POP over TLS |
pop.ucolick.org |
995 |
POP over SSL (pop3s) |
Using encryption
Three different types of encryption are available for receiving e-mail: no encryption at all, TLS, and SSL. It is strongly recommended that you enable TLS or SSL whenever possible; if you have a choice between the two, use TLS.
TLS and SSL encryption are mutually incompatible. You can only use SSL on ports 993 and 995; you cannot use SSL on either of the other two ports. Likewise, you can only use TLS on ports 143 and 110, you cannot use it on ports 993 or 995.