Maillist Processing Info

I am getting this statistics on sending email

[Wed 8 Feb 2017 13:10] [CL] Started
[Wed 8 Feb 2017 13:10] [CL] Sending in batches of 490 messages
[Wed 8 Feb 2017 13:10] [CL] This batch will be 484 emails, because in the
last 1790 seconds 6 emails were sent
[Wed 8 Feb 2017 13:10] [CL] Processing has started,
[Wed 8 Feb 2017 13:10] [CL] One campaign to process.
[Wed 8 Feb 2017 13:10] [CL] Processing message 1
[Wed 8 Feb 2017 13:10] [CL] Looking for subscribers
[Wed 8 Feb 2017 13:10] [CL] Found them: 22 to process
[Wed 8 Feb 2017 13:10] [CL] Processed 22 out of 22 subscribers
[Wed 8 Feb 2017 13:10] [CL] Script stage: 5
[Wed 8 Feb 2017 13:10] [CL] 2 messages sent in 7.34 seconds (981 msgs/hr)
[Wed 8 Feb 2017 13:10] [CL] 20 failed (will retry later)

I can’t understand why the 20 are failed.

This is happening in each attempt. Only 2 or 3 emails are getting processed and rest getting failed.

Can you help me what I am missing in configuration.

I Sent a list of 64 addresses and it took almost 50 attempts to send whole list.

I have had this happen when there are invalid addresses in the database.
Look up the 20 that failed, and see what their email address looks like. That should give you some clues.

I believe that I had to go directly into the database to find those emails…
In the end, you will most likely want to delete those emails.

Hello,
I have checked the table user and deleted all invalid emails.

Still it is giving following report
[Tue 14 Mar 2017 11:30] [CL] Started
[Tue 14 Mar 2017 11:30] [CL] Processing has started,
[Tue 14 Mar 2017 11:30] [CL] One campaign to process.
[Tue 14 Mar 2017 11:30] [CL] Processing message 7
[Tue 14 Mar 2017 11:30] [CL] Looking for subscribers
[Tue 14 Mar 2017 11:30] [CL] 111 subscribers apply for attributes, now
checking lists
[Tue 14 Mar 2017 11:30] [CL] Found them: 111 to process
[Tue 14 Mar 2017 11:30] [CL] Processed 111 out of 111 subscribers
[Tue 14 Mar 2017 11:30] [CL] Script stage: 5
[Tue 14 Mar 2017 11:30] [CL] 5 messages sent in 0.82 seconds (21828
msgs/hr)
[Tue 14 Mar 2017 11:30] [CL] 106 failed (will retry later)