Re: [exim] error 421 on a new exim4 server

On 08/01/2021 13:11, Ale via Exim-users wrote:
> Do you think It's still worth reading the book "The Exim smtp Mail server" by Philip Hazel?

It's an excellent resource, especially if you learn best
from dead-tree format information. The basic structure
and operation of Exim is unchanged from when it was written.

You'd need to supplement it with the current online documentation
to check for changes since the book was written, for new
features and for esoteric details.


Or, you could just read the online docs end-to-end.
--
Cheers,
Jeremy