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Address Rewrite Issues With MTA Using Exclamation Point "!" and/or Percent Sign "%" sign in the Email Address (Doc ID 1602362.1)

Last updated on NOVEMBER 15, 2022

Applies to:

Oracle Communications Messaging Server - Version 7.0.0 and later
Information in this document applies to any platform.


The email address  "usera+12!" is being interpreted incorrectly by the MTA and leads to an error of 'Illegal host/domain name found' in the mail.log file:

For clarity, the email address "usera+12!" is mail intended for the user "usera" of the domain "", intended to be directly delivered to this user's folder "12!3":

  <user part of email address> + <folder name> @ <domain part of email address>





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