exim port check

While checking the exim logs if you are getting "timeout" error then you should check the port  as below -

1) IN to OUT port check-

[root@ns1 ~]# telnet mail.xxx.com 25
Trying 1.2.3.4...
Connected to mail.xxx.com.//you will get time-out here
Escape character is '^]'.
220 host.xxx.net ESMTP Postfix

2)Out to IN port check
check with url http://ping.eu

3)Make sure the ports 25,465,587,110 are open for server x.x.x.x on both side. 

Exim commands

# List all queued messages, grouped by sender address
exim -bpr | grep -Eo "<[^ ]*@[^ ]*>" | sort | uniq -c

# List all queued messages, grouped by recipient address
exim -bpr | grep -Eo "^\s*[^ ]*@[^ ]*$" | sort | uniq -c

# Remove all messages older than 12hrs (43000 seconds)
exiqgrep -o 43000 -i | xargs exim -Mrm

# Remove all frozen messages from the queue
exiqgrep -z -i | xargs exim -Mrm

# Remove all messages from a particular sender
exiqgrep -i -f [user]@domain.com | xargs exim -Mrm

# Remove all messages from a sender that are older than 12hrs
exiqgrep -o 43000 -i -f [user]@domain.com | xargs exim -Mrm

not able to sent mail

Not able to send mails to particular email id only x@xxx.com  and getting following logs -

2015-02-17 15:23:39 [3230] 1YNeqU-0000q1-No ** x@xxx.com F= P= R=dkim_lookuphost T=dkim_remote_smtp: SMTP error from remote mail server after initial connection: host x1x.xxx.com [192.8.186.129]: 554 x1x.xxx.com

Solution -
1)check hostname file.
2)Make sure that you have setup RDNS for the MX record.