Hi Klaus,
The version indicated in that note include fixes for all the components. In this case, utilizing the Relay Server version included with SMP 3.0 SP03 PL01 & SMP 2.3 SP04 PL01 will include patches for the Heartbleed issue.
As a side note, the Relay Server is part of the SQL Anywhere platform so we can also use those value from the note as well. The SP level can be a bit difficult to compare against your actual version but you can use the following:
SQL Anywhere 16.0.0 SP 11 - > 16.0.0.1824 (This is the version shipped with SMP 2.3 SP04 PL01)
Hope this helps,
Edgar