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Email, Unauthenticated SMTP for campus printers, web services, etc.

This page contains information about outbound-relays (aka Express-SMTP), an email service for on-campus IP addresses.

Who can use Outbound-Relays to send outgoing messages

Any computer, printer, web service or email client in the campus IP space can use Outbound-Relays to send outbound email messages.  The name is a deprecated name that exists for legacy systems.   

Configure your on-campus printer or other device to use Outbound-Relays

Set up your device with these connection parameters:




requires an encrypted connection:


reply email address:  A valid, deliverable email address OR ''. (Email sent to no-reply is discarded by the email relays.)

Limits:   Since this is a shared resource on the campus, there is a limit of 50 concurrent connections per server and 100 messages per connection.

Keywords:Express-SMTP, on-campus, campus IP address, email, printer, web services, outbound relays. smtp id   Doc ID:47888
Owner:Email Relays E.Group:University of Illinois Technology Services
Created:2015-03-02 16:59 CDTUpdated:2020-03-16 17:22 CDT
Sites:University of Illinois Technology Services
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