Re: [monit] Alerts and HELO/MessageID hostname issue

[Martin Pala]

Hi,

the new "hostname" option was added which allows to override the default 
outgoing hostname used in EHLO/HELO and Message-ID header.

Example syntax:

  set mailserver foo.bar.baz
    with timeout 30 seconds
    using hostname "my.monit.host"

The change is in CVS (http://savannah.nongnu.org/cvs/?group=monit) and 
will be part of next monit release.


Thanks,
Martin




Athan Dimoy wrote:
> The host where monit runs (example.com) also hosts my mail server 
> (mail.example.com). This server is used my monit to send alerts using smtp 
> (mailserver mail.example.com). Monit is using gethostname() function which 
> returns the hostname example.com. Next, this hostname is used my monit, both 
> as HELO (EHLO) and MessageID trail.
>
> Unfortunately, my ISP, as well as my company mailserver, use a backscatter 
> protection that reject monit alerts as forged mail. The reason is, that 
> example.com MX is mail.example.com and that is what is expected as HELO 
> message and MessageID trail.
>
> The only solution I've found so far, is to hardcode the desired hostname 
> (mail.example.com) in sendmail.c.
>
> Could you please consider implementing an additional mailserver entry that 
> will allow users to set the exact hostname to be used for HELO/EHLO and 
> MessageID generation? For example: "set mailserver mail.example.com with 
> hostname mail.example.com with timeout 30 seconds"
>
> Thanks
> Athan
>
>
>
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