app-antivirus/clamav depends on sendmail, which is a blocker when postfix is installed. This could be a bug depending on who you ask ;-) Can you remove sendmail as a dependency (and instead require some generic package that covers compatible smtp servers) OR create a separate postfix-compatible ebuild? Reproducible: Always Steps to Reproduce: 1. 2. 3.
Disable "milter" USE flag.
I am using without any problems with postfix on amd64 - but milter is sendmail specific hence the dep.
Closing as invalid.