Best mail setup for home server?

[Joshua Isom]

I currently use my FreeBSD system as my generic unix server and some 
coding, along with occasional multimedia.  I'd installed postfix years 
ago and kept using it.  Right now, I use getmail with cron, dspam, and 
dovecot to handle my gmail account.  I've never set up outgoing mail 
which makes changing email clients, or devices, annoying.  Currently 
postfix is set to use dovecot's deliver command so that dovecot can sort 
and handle it.  Before I deal with setting postfix to relay the mail, 
dealing with firewalls and other possible issues, is there a better 
alternative?  I'd prefer that local mail "just works" even if I lose 
internet, and any email that gets as far as my server will at least 
eventually mail.  The archlinux wiki seems to suggest ssmtp doesn't work 
properly with attachments.  Instead it recommends msmtp, which requires 
an active internet connection to use.  Dragonfly's dma is local only to 
the computer and not the LAN.  Are the only options configuring sendmail 
or configuring postfix?