Re: monit 5.4 violating smtp protocol

[Martin Pala]

Hi Len,

thanks for report, the problem is fixed in the next Monit release.

Regards,
Martin


On Aug 23, 2012, at 3:18 PM, Len Conrad <address@hidden> wrote:

> 
> I have several monit 5.4 with their mailserver set to mx1.domain.com
> 
> mx1 runs postfix's postscreen and is dropping the monit smtp clients with
> 
> "PREGREET 20 after 0"
> 
> that's "after 0 seconds", meaning monit smtp client is connecting to port 23 
> and immediately starts sending, when it should wait for mx1's SMTP greeting.  
> 
> That's why the log line is a PREGREET violation. 
> 
> The "20" means mx1 received 20 characters before mx1 could send its SMTP 
> greeting.
> 
> As a result, we aren't getting monit alerts and will have to whitelist all 
> the monit IPs so the pregreet filter doesn't drop them.
> 
> Len
>