Re: Monitoring external SMTP service

[Jan-Henrik Haukeland]

Hmm, seems I misunderstood the problem. I didn't read the whole thread, and 
someone informed me that the problem was in the SMTP test, not in sending mail 
from Monit. In the SMTP test (if failed host 192.168.1.100 port 25 protocol 
smtp then..) localhost is in fact hardcoded in EHLO. So no luck. 

On Jan 5, 2012, at 5:08 PM, Jan-Henrik Haukeland wrote:

> 
> On Jan 5, 2012, at 3:02 PM, Christian Bianchi wrote:
> 
>> the host(s) are ok (but i removed the unneded one).
>> i made a scan with tcpdump and found that monit puts "EHLO localhost"
>> and my smtp server responds with: "Response: 551 sorry, your domain is
>> not correct"
>> is there a way to specify the domain instead of "localhost"?
> 
> Yes, from the manual: 
> http://mmonit.com/monit/documentation/monit.html#setting_a_mail_server_for_alert_messages
> 
>               Monit, by default, use the local host name in SMTP HELO/EHLO 
> and in the 
>               Message-ID header. Some mail servers check this information 
> against DNS for 
>               spam protection and can reject the email if the DNS and the 
> hostname used in 
>               the transaction does not match. If this is the case, you can 
> override the 
>               default local host name by using the HOSTNAME option:
>               
>               set mailserver mail.tildeslash.com using hostname 
> "myhost.example.org"