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Published Jun. 30, 2025

Error: Unable to send message: Invalid Addresses

Written By

Viktória Gyömbér

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Issue

After integrated the Mail Server:  Exchange in Liferay DXP there is a following Error in the logs:

 

ERROR [liferay/mail-1][MailEngine:74] Unable to send message: Invalid Addresses
com.sun.mail.smtp.SMTPAddressFailedException: 550 5.7.54 SMTP; Unable to relay recipient in non-accepted domain_ [Sanitized]

 

Environment

Liferay DXP 7.2

 

Resolution

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