fail2ban emails

I have followed the howto of fail2ban and I want to recieve emails about the banned ip's. I 'm just not recieving these mails.
fail2ban.log says:

The jail <name> has been started successfuly.\n
Regards,\n
Fail2Ban"|mail -s "[Fail2Ban] <name>: started" <dest>
2007-07-29 02:31:35,246 fail2ban.actions.action: INFO Set actionUnban =
2007-07-29 02:31:35,250 fail2ban.actions.action: INFO Set actionCheck =
2007-07-29 02:31:35,434 fail2ban.actions.action: ERROR echo -en "Hi,\n
The jail postfix has been started successfuly.\n
Regards,\n
Fail2Ban"|mail -s "[Fail2Ban] postfix: started" [email protected] returned 7f00
2007-07-29 02:31:35,624 fail2ban.actions.action: ERROR echo -en "Hi,\n
The jail courierpop3 has been started successfuly.\n
Regards,\n
Fail2Ban"|mail -s "[Fail2Ban] courierpop3: started" [email protected] returned 7f00
2007-07-29 02:31:35,702 fail2ban.actions.action: ERROR echo -en "Hi,\n
The jail proftpd has been started successfuly.\n
Regards,\n
Fail2Ban"|mail -s "[Fail2Ban] proftpd: started" [email protected] returned 7f00
2007-07-29 02:31:35,902 fail2ban.actions.action: ERROR echo -en "Hi,\n
The jail courierimap has been started successfuly.\n
Regards,\n
Fail2Ban"|mail -s "[Fail2Ban] courierimap: started" [email protected] returned 7f00
2007-07-29 02:31:35,913 fail2ban.actions.action: ERROR echo -en "Hi,\n
The jail ssh has been started successfuly.\n
Regards,\n
Fail2Ban"|mail -s "[Fail2Ban] ssh: started" [email protected] returned 7f00
2007-07-29 02:31:36,114 fail2ban.actions.action: ERROR echo -en "Hi,\n
The jail apache has been started successfuly.\n
Regards,\n
Fail2Ban"|mail -s "[Fail2Ban] apache: started" [email protected] returned 7f00
2007-07-29 02:31:36,161 fail2ban.actions.action: ERROR echo -en "Hi,\n
The jail sasl has been started successfuly.\n
Regards,\n
Fail2Ban"|mail -s "[Fail2Ban] sasl: started" [email protected] returned 7f00


Can somebody help me please?

Thanks in advance and best regards,

Jasper

 

Any errors in your mail log?

 

no errors in mail log

And I can send mail from the server to [email protected] if I use:

sendmail [email protected] <test

I have postfix installed.

 

I found the problem.

I don't have a mail command just a sendmail command because of install postfix.

After installing mailx everything works fine.

Thanks and regards,

Jasper

 

Uff, being trying to fix this for hours. That was easy, many thanks for the information.

Regards,