I spent last 3 hours of reasearch on how to get nagios to work with email notifications, i need to send emails form work where the only accesible smtp server is the company's one.

i managed to get it done from the console using:

mail [email protected]

working perfectly for the purpouse i set up ssmtp.conf so as:

[email protected]
mailhub=smtp.company.com:587
[email protected]
AuthPass=mypassword
FromLineOverride=YES
useSTARTTLS=YES
rewriteDomain=company.pl
hostname=nagios
UseTLS=YES

i also edited the file /etc/ssmtp/revaliases so as:

root:[email protected]:smtp.company.com:587
nagios:[email protected]:smtp.company.com:587
nagiosadmin:[email protected]:smtp.company.com:587

i also edited the file permisions for /etc/ssmtp/* so as:

-rwxrwxrwx 1 root nagios  371 lis 22 15:27 /etc/ssmtp/revaliases
-rwxrwxrwx 1 root nagios 1569 lis 22 17:36 /etc/ssmtp/ssmtp.conf

and i assigned to proper groups i belive:

cat /etc/group |grep nagios
mail:x:12:mail,postfix,nagios
mailnull:x:47:nagios
nagios:x:2106:nagios
nagcmd:x:2107:nagios

when i send mail manualy, i recieve it on my priv box, but when i send mail from nagios the mail log says:

Nov 22 17:47:03 certa-vm2 sSMTP[9099]: MAIL FROM:<[email protected]> 
Nov 22 17:47:03 certa-vm2 sSMTP[9099]: 550 You are not allowed to send mail from this address

it says [email protected] and im not allowed to send mails claiming to be [email protected], its suppoused to be [email protected], what am i doing wrong? i ran out of tricks...

kind regards Adam xxxx