The outgoing mail (SMTP) server provided
by IT Services can be used for sending email from both on and off-campus, but
off-campus, it requires users to 'authenticate' to the server with a username
and password. To protect the username and password it is also necessary to have
a 'secure connection' using protocols known as Transport Layer Security (TLS)
or Secure Sockets Layer (SSL).
Do I need to use SMTP authentication?
- you only send email when on-campus
- you use the college Webmail
service to read and send email.
- you send email from off-campus by first connecting via a college dial-up
- you send email from off-campus by connecting to the internet using a commercial
ISP and are able to use that ISP's own SMTP server.
- you want to send email from off-campus by connecting to the internet using
a commercial Internet Service Provider (ISP) but the ISP will not allow you,
or you do not want to use their SMTP server.
How do I set up SMTP authentication?
If you do need to use SMTP authentication, for example, if you want to use
the same laptop computer at home and at work without changing settings:
- Firstly, find out if you have a valid user name for central computer services:
If you are a member of staff or a postgraduate research student with:
- a central imap mailbox
- a UNIX account on alpha or iota that has been accessed within the last
year and has a 'staff-style' username beginning with 3 or 4 letters
- if you have registered for central services since June 2001
- if you are an undergraduate or taught postgraduate with a Student Service
then you will already have a username and password suitable for SMTP authentication.
If none of the above applies to you, then you will need to contact IT Services (room W209, Queens' Building). Users with student-style usernames
(two letters followed by 4 or 5 digits) will need to re-register, but, if
you are an undergraduate you will not normally be able to use the authenticated
For Mac users, the choice is limited and those below are the only
ones so far tested and proved to work:
Two common problems when attempting to set up SMTP Authentication on the college
smtp server are:
- SMTP port numbers.
Some ISPs (including the College's Halls and wireless networks) will block
outbound traffic on the default SMTP port (25) or divert it to their own
servers. If you find this to be the case you can try changing the port number
in the SMTP settings of your email client either to 587 or 465.
- Anti-Virus Software and Secure Connections
Please note that some virus-checking programs, for example Norton's,
may cause problems when making secure (SSL or TLS) connections to
an SMTP server and you may find it necessary to turn off the automatic
checking of outgoing mail.