Author: Jeremy Harris Date: To: exim-users @ exim. org Subject: Re: [exim] SMTP protocol violation
Jonathan Carpenter wrote: > I have 3 mail severs. 2 smtp server and 1 pop3 server running exim 4.43. I
> get this message in my /var/log/exim/mainlog
>
> SMTP protocol violation: synchronization error (input sent without waiting
> for greeting): rejected connection
>
> I have rejected connections from both of my smtp servers and also from my
> webserver that I have exim installed for perl and php scripts. Everything
> has been working great with this setup for around 2 months. I have around
> 150 message in my mail que on my pop3 server all from my webserver that are
> not being delivered even when I try to force delivery using exim -qff . Any
> help would be greatly appreciated
Post some log snippets. Don't obscure the IP addresses, and list
the IP addresses of the systems you're running exim on.
It's not clear to me from what you say above whether your exim(s) are
rejecting connections from themselves, from each other, or from
some unknown third-party systems.