Search Engine: Elastic

Article ID: 124118, created on Dec 31, 2014, last review on Dec 31, 2014

  • Applies to:
  • Operations Automation 5.5


After POA upgrade to version 5.5.x Horde Webmail is no longer working. It is impossible to send an email, you just receive the following error message:

There was an error sending your message: unable to add recipient []: Invalid response code received from server


Whitelist file /usr/local/qmail/shared/control/whitelist is missing on the mail servers in the QMail cluster or the file exists, but its contents does not have the Frontnet IP of the Webmail server.


An entry for the Frontnet IP of the Webmail server should be added to the /usr/local/qmail/shared/control/whitelist file like below:

[root@linmail01 ~]# grep /usr/local/qmail/shared/control/whitelist

Where is the Frontnet IP of the Webmail server.

5b048d9bddf8048a00aba7e0bdadef37 caea8340e2d186a540518d08602aa065 e12cea1d47a3125d335d68e6d4e15e07 5356b422f65bdad1c3e9edca5d74a1ae 2554725ed606193dd9bbce21365bed4e

Email subscription for changes to this article
Save as PDF