You try to use a QMail mailbox in Microsoft Outlook and check the "My outgoing server (SMTP) requires authentication" checkbox, but receive the following error when Outlook tries to send a test email:
Send test e-mail message: Your outgoing (SMTP) e-mail server has reported an internal error. If you continue to receive this message, contact your server administrator or Internet service provider (ISP). The server responded: 452 wrong response from throttling daemon
If you try to send it directly from the mail server the same error is received:
[root@dc2paralqmpd01 ~]# telnet localhost 25 Trying 127.0.0.1... Connected to localhost.localdomain (127.0.0.1). Escape character is '^]'. 220 qmail.cloud.provider.com ESMTP ehlo 250-qmail.cloud.provider.com 250-STARTTLS 250-AUTH LOGIN PLAIN 250-AUTH=LOGIN PLAIN 250-PIPELINING 250 8BITMIME auth login 334 VXNlcm5hbWU6 dmVyeWxvbmd1c2VybmFtZUBldmVubG9uZ2VyZG9tYWlubmFtZS5jb20= 334 UGFzc3dvcmQ6 dmVyeXNlY3VyZXBhc3N3b3Jk 235 ok, go ahead (#2.0.0) MAIL FROM:email@example.com 250 ok RCPT TO:firstname.lastname@example.org 250 ok DATA 452 wrong response from throttling daemon
The following is written to maillog at the same time:
Aug 21 14:18:07 dc2paralqmpd01 qmail-smtpd: WHOSONERR: wrong response from throttling daemon: '"addr" argument too long'
Mailbox name is longer than 32 symbols - there is a problem with WHOSON package fixed in POA 5.4.4. Internal issue ID is POA-71901.
The issue is fixed in POA 5.4.4 and the following whoson package versions:
# rpm -qa | grep whoson whoson-2.05-1.parallels whoson-server-2.05-1.parallels
If you already have POA 5.4.4 or higher, check that the package versions on WHOSON server match the ones listed above and that whoson service was restarted after the packages were updated. If not, restart it manually:
# killall -9 whosond # /etc/init.d/whoson start