Since we allow edit of LDAP mail attribute, we can use it in Postfix LDAP queries that look up the user's email addresses. **Proposed enhancements** 1. Add a new option to Mail domains "Add LDAP mail attribute addresses" <img width="690" height="379" alt="Image" src="https://github.com/user-attachments/assets/62ddfa27-11ff-4310-8cdb-e8b8fade2ce1" /> 2. If Enforce Sender/Login match switch is enabled, the LDAP mail attribute is considered a valid address of the SASL login name <img width="690" height="458" alt="Image" src="https://github.com/user-attachments/assets/bde5bda8-d703-42bd-822e-52649e6d6808" /> **See also** - https://community.nethserver.org/t/option-to-add-mail-field-addresses-to-the-known-mail-addresses/25919 Thanks to @mrmarkuz