No No, emails that was sent from my server I control by others scripts. I know that from my server have not any spammer.
If my server received a lot of spam, I think that queue must have more that 116 messages, do you agree?? Or I am wrong???
Not necessarily, the 116 messages in queue were at a particular time. A possibility could be that spamming could have happened at a particular instance and the mails were delivered. You need to check the logs to find out any suspicious activity.
Those appear to be spoofed emails coming into the server being rejected by Exim due to Sender Verification Callout feature.
Exim will perform a callout on the sender's email server to make sure the email address from which the email came exists. Since the email address was spoofed and did not exist at the sender's email server, the email was rejected.
If you see that the IP address xxx.7.26.248 in all the entries is the same then you can block it using iptables,
iptables -A INPUT -s xxx.7.26.248 -j DROP
You can truncate the log files using the following command,