Admin email address

[ricger]

CMK version:
2.0.0p16.cre
OS version:
Debian 11
Error message:
I’ve installed postfix as MTA to send through smarthost and from CLI is working correcly

OMD[my_site]:~$echo "some text" | mail -s "mail test" my_email@mydomain.com

on /var/log/mail.log I can see correctly

Sep  1 14:24:58 srv-service postfix/pickup[748354]: 04E04249EB: uid=998 from=<my_site>
Sep  1 14:24:58 srv-service postfix/qmgr[458506]: 04E04249EB: from=<my_site@mydomain.com>, size=490, nrcpt=1 (queue active)

If I enable Notification instead on /var/log/mail.log i found

Sep  1 14:34:36 srv-service postfix/pickup[748354]: 72DE5249EB: uid=998 from=<my_site@srv-service.mydomain.local>
Sep  1 14:34:36 srv-service postfix/qmgr[458506]: 72DE5249EB: from=<my_site@srv-service.mydomain.local>, size=164995, nrcpt=1 (queue active)

I was expected to see checkmk notifications email from reporting@mydomain.com as per /omd/sites/refrion_site/etc/omd/site.conf

CONFIG_ADMIN_MAIL=‘reporting@mydomain.com’
CONFIG_APACHE_MODE=‘own’
CONFIG_APACHE_TCP_ADDR=‘127.0.0.1’
CONFIG_APACHE_TCP_PORT=‘5000’
CONFIG_AUTOSTART=‘on’
CONFIG_CORE=‘nagios’
CONFIG_LIVESTATUS_TCP=‘off’
CONFIG_LIVESTATUS_TCP_ONLY_FROM=‘0.0.0.0 ::/0’
CONFIG_LIVESTATUS_TCP_PORT=‘6557’
CONFIG_LIVESTATUS_TCP_TLS=‘on’
CONFIG_MKEVENTD=‘on’
CONFIG_MKEVENTD_SNMPTRAP=‘off’
CONFIG_MKEVENTD_SYSLOG=‘off’
CONFIG_MKEVENTD_SYSLOG_TCP=‘off’
CONFIG_MULTISITE_AUTHORISATION=‘on’
CONFIG_MULTISITE_COOKIE_AUTH=‘on’
CONFIG_NAGIOS_THEME=‘classicui’
CONFIG_NSCA=‘off’
CONFIG_NSCA_TCP_PORT=‘5667’
CONFIG_PNP4NAGIOS=‘on’
CONFIG_TMPFS=‘on’

My smarthost is accepting only email from mydomain.com so i don’t receive Notifications: any suggestion on how to change the from address?
Thanks in advance

[Yggy]

The domain part srv-service.mydomain.local is very likely caused by domain (alias) in /etc/hosts file influencing the FROM address during HELO or EHLO connection.

I don’t have a solution (yet).

Having similar issues with sendmail smtp relay to smtp.office365.com which doesn’t accept my mail either. I was able to add an alias in hosts file so [domain].[tld] matches, but server hostname was added as subdomain which makes MS say SendAsDenied.
Maybe I can make it work by adding subdomain (wildcard) to MS as accepted domain, but not liking that workaround. So I currently parked the issue as something to figure out later.

As a workaround for the mean time I went for another maildomain not hosted by MS accepting mail from less ‘safe’ applications.
Not using Gmail myself, but they have options to allow their smtp to accept such mail. I believe their settings are called smtp overrides.

[ricger]

I’ve found the solution for change FROM address: from WATO Setup-Notification then under Global notification rules you can chage it!

[Yggy]

Thanks!
Will check it out after the weekend if this will work with MS issue as well, looks promising.