mailserver on fd
 

is there a distro of linux on a fd that just runs a mailserver?

Not that I know of. You can, perhaps, take an existing distribution (for example Tom's root boot disk) and load a pop3 daemon using another floppy.

The biggest problem is the space requirements of the daemon tools and a working kernel + userspace programs to configure stuff.

A 2.88 Mb floppy would bring more possibilities, only not everybody has a 2.88 Mb floppy drive.

Why don't you try Knoppix instead??? :-)

Good luck!

why knoppix?
 

I have red had and could set it up that way. What would be the advantage of knoppix

I mentioned Knoppix, because you asked for a fd (which I read as a floppy-drive) based version of Linux. For me, floppy-drive equals to portability. I associate portability with a plug-it-in-CD. I associate a plug-it-in-CD with Knoppix. So there... :-)

And yes of course, a Red Hat Linux based server on a harddrive would be better for server purposes than Knoppix.