试图从端口安装postfix并得到这个错误：
===> Compressing manual pages for cyrus-sasl-2.1.26_2 ===> Running ldconfig /sbin/ldconfig -m /usr/local/lib ===> Registering installation for cyrus-sasl-2.1.26_2 ===> Returning to build of postfix-2.9.4_2,1 Error: shared library "sasl2.2" does not exist *** Error code 1 Stop in /usr/ports/mail/postfix. *** Error code 1 Stop in /usr/ports/mail/postfix. *** Error code 1 Stop in /usr/ports/mail/postfix.
ldconfig -r | grep sasl
[/ usr / ports / mail / postfix] [12:49] [pts / 0]
111：-lsasl2.3 => /usr/local/lib/libsasl2.so.3
297：-lsasldb.2 => /usr/local/lib/compat/pkg/libsasldb.so.2
312：-lsasl2.2 => /usr/local/lib/compat/pkg/libsasl2.so.2
318：-lsasldb.3 => /usr/local/lib/compat/pkg/libsasldb.so.3
请确保你已经运行了portsnap fetch update 。 之后通过使用pkg_version -l "<"来升级未更新的端口。
这应该可以解决你的问题。