Our zimbra system is setup to use some RBLs for verifying SPAM. However,
We have some problems when users use email clients (Outlook 2003, Outlook Express, ...) from ADSL line to connect zimbra server using SMTP and POP for sending/receiving mail. Some IP addresses of ADSL lines is listed in RBLs so when users send mail, they receive the error: their IP address is listed in abuseat.org --> blocked.
has Zimbra solutions to authenticated users can send mail in this case?
We're on zimbra 5.0.8 version