what would a POP3s daemon best look like?

[Peter J. Philipp]

Hi,

The end of the year is approaching and I'm looking around for new 
projects.  Currently I have two projects that i'M active on, but willing 
to put them on the back burner come new years for a POP3s daemon.  The 
reason I want a pop3s daemon is because I want something pledged and 
unveil'ed with privsep and high security (all the while using libressl).

Now having said that OpenBSD had a non-ssl'ed pop3 daemon once but it 
was moved away I gather.  Where would I find the source to this?  Is it 
worth it taking design hints from that daemon? Obviously I want it 
written in C with possibly a small YACC parser but a pop3s daemon 
doesn't need much configuration I gather.  I once watched a friend in 
1998 write a POP3 daemon but it doesn't cut it under todays security 
theatre demands, plus I wouldn't know where to get that source and he's 
deceased on top of that.

Currently I'm using POP3s with dovecot on a small vps for me and my 
family.  We're pretty much happy but I'm starting to get worried about 
the lacking pledge and unveil in that package.

Regards,

-peter