A positive response received from Plesk server after mail service settings are modified looks as shown below. This packet returns the result of modifications applied to two domains.
<packet version="1.4.2.0">
<mail>
<set_prefs>
<result>
<status>ok</status>
<domain_id>12</domain_id>
</result>
<result>
<status>ok</status>
<domain_id>13</domain_id>
</result>
</set_prefs>
</mail>
</packet>
If the operation fails, a negative response can look as follows:
<packet version="1.4.2.0">
<mail>
<set_prefs>
<result>
<status>error</status>
<errcode>1023</errcode>
<errtext>Operation failed.</errtext>
<domain_id>12</domain_id>
</result>
<result>
<status>error</status>
<errcode>1023</errcode>
<errtext>Operation failed.</errtext>
<domain_id>13</domain_id>
</result>
</set_prefs>
</mail>
</packet>