Policy for Blocking E-Mail
If you are currently receiving SMTP log entries indicating that Loyola University Chicago (LUC) is blocking e-mail sent by you or your organization, please read the following:
Due to an increase in the number of BOT-NETs responsible for sending SPAM, the Information Technology Services division at Loyola University Chicago has no alternative but to tighten the restrictions for sending e-mail to the LUC.EDU domain.
Many hosts are blocked as a result of malformed HELO or HELO statements that begin with a number instead of an alpha character. In other words, if an SMTP host is issuing an acceptable command, it should look similar to "HELO smtp-gate1.domain.ext". Obviously, the issuer's "domain.ext" would be specific to the domain sending the e-mail. These would be allowed through. Conversely, a host that provides a HELO command such as "HELO 123.domain.ext", would be rejected.
If you feel that your organization is being inaccurately blocked, please contact our Information Technology Services Support Center at 773.508.4ITS (4487) and provide the following:
- Your organization's name
- Summary of your organization
- Statement of e-mail intent
- A comprehensive list of your e-mail gateway names that will be utilized to send e-mail to LUC recipients, or alternatively, you can send the formula used for your naming convention.
The Information Technology Services e-mail postmaster will contact you once the appropriate change has been made to allow e-mail to flow without obstruction.
History and Updates
If you are currently receiving SMTP log entries indicating that Loyola University Chicago (LUC) is blocking e-mail sent by you or your organization, please read the following:
Due to an increase in the number of BOT-NETs responsible for sending SPAM, the Information Technology Services division at Loyola University Chicago has no alternative but to tighten the restrictions for sending e-mail to the LUC.EDU domain.
Many hosts are blocked as a result of malformed HELO or HELO statements that begin with a number instead of an alpha character. In other words, if an SMTP host is issuing an acceptable command, it should look similar to "HELO smtp-gate1.domain.ext". Obviously, the issuer's "domain.ext" would be specific to the domain sending the e-mail. These would be allowed through. Conversely, a host that provides a HELO command such as "HELO 123.domain.ext", would be rejected.
If you feel that your organization is being inaccurately blocked, please contact our Information Technology Services Support Center at 773.508.4ITS (4487) and provide the following:
- Your organization's name
- Summary of your organization
- Statement of e-mail intent
- A comprehensive list of your e-mail gateway names that will be utilized to send e-mail to LUC recipients, or alternatively, you can send the formula used for your naming convention.
The Information Technology Services e-mail postmaster will contact you once the appropriate change has been made to allow e-mail to flow without obstruction.