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UNLV IT Mail Relay (mail.oit.unlv.edu) will be decommissioned
If you have any applications utilizing the internal mail relay (mail.oit.unlv.edu), please transition to one of the supported options below before December 18, 2024.
SMTP (Simple Mail Transfer Protocol) is the standard protocol for sending emails across the Internet. Google Workspace offers two SMTP solutions for UNLVMail (unlv.edu) and Rebelmail (unlv.nevada.edu) accounts. These solutions allow account holders to send emails through Google's servers using various applications and services.
SMTP Solutions Comparison
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Gmail SMTP Server
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Google Workspace SMTP Relay
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Server Address:
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smtp.gmail.com
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smtp-relay.gmail.com
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Ports (TLS or SSL required):
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587 (TLS) or 465 (SSL)
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587 (TLS) only
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Authentication (Required):
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OAuth 2.0 is recommended.
If OAuth is not supported, use the following:
Username: Your full Google Workspace email address (e.g.. john.smith@unlv.edu or smith123@unlv.nevada.edu)
Password: App Password (Your standard ACE password will not work)
Note: You will need to generate an app password. Your standard ACE password will not work.
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OAuth 2.0 is recommended.
If OAuth is not supported, use the following:
Username: Your full Google Workspace email address (e.g.. john.smith@unlv.edu or smith123@unlv.nevada.edu)
Password: App Password (Your standard ACE password will not work)
Note: You will need to generate an app password. Your standard ACE password will not work.
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Daily Sending Limit:
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Up to 2,000 messages per 24 hour period
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Up to 10,000 messages per 24 hour period
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Recommended For:
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Mail Clients (e.g. Mac Mail) and smaller email volume
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Servers and devices (e.g., printers) and larger email volume
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Troubleshooting and FAQ
Q: How do I obtain an App Password for Gmail SMTP if my application or device does not support OAuth 2.0?
A: Follow these instructions to generate an App Password. You must enable Google’s 2 step verification first.
Q: Why am I getting an "Authentication Required" error?
A: Ensure you're using the correct username and password and make sure you are using an App Password and not your account’s standard ACE password.
Q: What should I do if I exceed the daily sending limit?
A: UNLV IT does not have the ability to increase the sending limit. You must wait 24 hours for the limit to reset.
Need Additional Help?
Documentation is available from Google:
For additional assistance, please visit the Google Workspace knowledge base for additional articles. You can also contact the IT Help Desk.