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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.
This SMTP service allows computers or devices in the campus IP network to send "outbound" email without authenticating, so your device won't need a NetID and password to send email.  The device or service needs to have a campus recognized IP or be connected to campus via the VPN service.

Who can use Outbound-Relays to send outgoing messages

Any computer, printer, web service or email client in the campus IP space, or on campus private IP space with NAT enabled can use Outbound-Relays to send outbound email messages. Note: If a network is opted out of NAT, it can no longer reach the outbound-relays address.

NOTE:

  • Private IP spaces on campus  (10.x.x.x, 192.168.x.x, & 172.16.00-172.31.255.255)  are no longer authorized to use outbound-relays.techservices.illinois.edu.  
  • The name express-smtp.cites.illinois.edu 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:
server settings

server:

outbound-relays.techservices.illinois.edu

port

25

requires an encrypted connection:

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


Keywords:
Express-SMTP, on-campus, campus IP address, email, printer, web services, outbound relays. smtp id 
Doc ID:
47888
Owned by:
Email Relays E. in University of Illinois Technology Services
Created:
2015-03-02
Updated:
2023-02-14
Sites:
University of Illinois Technology Services