RE: [exim] O¨Reilly Exim book useful for Exim 4?

> Is the book "Exim: The Mail Transfer Agent" from O´Reilly
> any good when using Exim 4?

Yes. (If you are only paying $2.50 for it like I did.)

For the $6 (including shipping) that I paid it was a good
deal.

> What will I miss?

Most everything you will miss is in the online documentation.