Open relay? Nonlocal recips but not originating

[hmayorga]

Amavis messages in /var/log/zimbra.log

 Dec 13 18:25:30 srv-mail amavis[28214]: (28214-01) Open relay? Nonlocal recips but not originating: email1@dominio1.tld
Dec 13 18:29:26 srv-mail amavis[3838]: (03838-01) Open relay? Nonlocal recips but not originating: other_email2@other_dominio2.tld
Dec 13 18:29:36 srv-mail amavis[3837]: (03837-01) Open relay? Nonlocal recips but not originating: other_email3@other_dominio3.tld 
  

any idea to solve this problem??

[phoenix]

any idea to solve this problem??

A forum search, perhaps?

site:zimbra.com +"Nonlocal recips but not originating" - Yahoo! Search Results

[hmayorga]

A forum search, perhaps?

site:zimbra.com +"Nonlocal recips but not originating" - Yahoo! Search Results

I have reviewed the results and searched the forum but have not found a solution and the problem continues.

This message appears when sending mail from outside the network, my clients are authenticated.

Sorry for my English..