Nur für mich:
[…]
The solution I tried and stuck with after
my second postfix installation was to create a bind mount between
/var/run/saslauthd and the directory inside the postfix chroot. I
created the directory /var/spool/postfix/var/run/saslauthd and then
added the following to my /etc/fstab file
/var/run/saslauthd /var/spool/postfix/var/run/saslauthd none rw,bind 0 0
[…]
[Quelle]
Natürlich immer noch daran denken, den Sasl/Pam Kram nach /var/spool/postfix/[lib;/usr/lib] zu schaufeln.