-Currently, security layers ("encryption" in SASL-speak) are only supported
-for POP. This means that if your POP server _and_ the selected GSSAPI
-mechanism supports it, POP communications will be encrypted. Currently
-SMTP does NOT support security layers; this may be added in a future
-release.
+Currently, security layers ("encryption" in SASL-speak) are supported
+for both POP and SMTP. This means that if your POP or SMTP server
+_and_ the selected SASL mechanism supports it, client-server
+communications will be encrypted. In theory this should work with
+any SASL mechanism that supports security layers; it has only been
+tested with the GSSAPI mechanism.