Sitecore web forms for marketers on a multi-instance environment

A typical multi-instance Sitecore environment will likely contain one content management (CM) server and two content delivery servers (CD). The master connection is removed from the CD servers as they should not be connecting to it, and this will affect web form for marketers (WFFM) because it has save actions such as creating Sitecore items and uploading files.

Therefore for these actions to work as expected the CD servers will need to be able to access the CM server via a service (port 80). The following connection string needs to be added to connectionstrings.config:

<add name="remoteWfmService" connectionString="url=http://[masterserver]/sitecore%20modules/shell/Web%20Forms%20for%20Marketers/Staging/WfmService.asmx;user=[domain\username];password=[password];timeout=60000" />