In Receiving Options I had Use Custom Command to Contect to Server checked and the field contained ssh -C -l %u %h exec /usr/sbin/imapd.
If I uncheck this, evolution appears to work.
In Receiving Options I had Use Custom Command to Contect to Server checked and the field contained ssh -C -l %u %h exec /usr/sbin/imapd.
If I uncheck this, evolution appears to work.