Solution : https://service.sap.com/sap/support/notes/1476389 (SAP Service marketplace login required)
Summary :
Key words :
port=8100icm/server_port_4 = prot=smtp, port=8100is/smtp/virt_host_0 = host1, icm/server_port_3 = prot=smtp, support package patch level, 8100is/smtp/virt_host_1 = host2, server port definitions, kernel patches mentioned, icm web administration, virtual host parameters, host=host1
Related Notes :
546147 | SMTP plug-in: MS Exchange sends only to port 25 |