The Embedded SMTP Server in SynaMan can detach attachments from incoming emails and replace them with a downloadable hyperlink in the original email. This page talks about how to configure SynaMan to steer messages after they are processed by SynaMan
There are two ways to configure the outbound settings, which is called Delivery Path:
These settings are specified on: Configuration / Advanced Configuration under the Embedded SMTP tab. See image below.
In this case, emails coming from the Internet needs to be forwarded to your corporate email server (MS Exchange in this example). Similarly, outbound emails needs to be forwarded to the Spam Filter.
Performing an MX Lookup within SynaMan will result in an incorrect result. Therefore, use the following method to bypass MX Lookups:
$INSTALL_DIR\configfolder. $INSTALL_DIR refers the folder where SynaMan is installed.
your.company.com 192.168.1.20 ALLDOMAINS 192.168.1.5
hosts.txtfile you're telling SynaMan to send every email with recipients belong to your company's domain to MS Exchange. Similarly, every other domain should be sent to your spam filter, which is typically the case for outbound emails.