If someone can send me a very informative link that can help me to underdstand the following with examples
1 . sendmail logs (/var/log/maillog)
2 . mailq
3 . how to check the deffered mails?
4 . how to check the rejected emails?
5 . how to resend the deferred and rejected emails?
6 . how can we count how many emails went successful / rejected / deferred in a day?
7 . how can we set and manage the multiple mailqs?
8 . understand /var/mail/mqueue (enteries starting with qf/df/Qf/tf )
9 . understand /var/mail/clientmqueue
10. shared mail server? (load balancer)
I am crazy to learn sendmail fully as in the new office sendmail is being used which i never used :-(
I will really appreciate if someone can help me to sort out these issues.