There is a new pull request by mithodin against master on the void-packages repository

https://github.com/mithodin/void-packages master
https://github.com/void-linux/void-packages/pull/18688

re-enable pam authentication in opensmtpd
opensmtpd no longer enables pam auth by default (despite the ./configure script claiming so). This is quite the useful feature, so I'd love to see it enabled.

A patch file from https://github.com/void-linux/void-packages/pull/18688.patch is attached