Can't build postfix(-current)

[Stefan Tell]

 * "Michael C. Shultz" <ringworm01 at gmail.com>

> build install sysutils/portmanager then run:
> 
> portmanager mail/postfix

Thanks for that, but portmanager have the same problem. The logfile said,
that the error occurs at 'make fetch'.

[stell at zeus:/usr/ports/mail/postfix]% make fetch
env: SASL2: No such file or directory
*** Error code 127

Any other hints?