Exim Basic information

Exim Basic information has given in this post. Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet. Exim is a very full-featured mail server. It is suitable for most sites, although very small sites might prefer a simpler alternative such as msmtp. Exim has been ported to most Unix-like systems. Here is some commands which are help you to resolve the issue :

Print a count of the messages in the queue:
root@localhost# exim -bpc
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Print a listing of the messages in the queue (time queued, size, message-id, sender, recipient):
root@localhost# exim -bp
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Print a summary of messages in the queue (count, volume, oldest, newest, domain, and totals):
root@localhost# exim -bp | exiqsumm
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Print what Exim is doing right now:
root@localhost# exiwhat
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Run a pretend SMTP transaction from the command line, as if it were coming from the given IP address. This will display Exim’s checks, ACLs, and filters as they are applied. The message will NOT actually be delivered.
root@localhost# exim -bh 192.168.11.22
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Display all of Exim’s configuration settings:
root@localhost# exim -bP
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