change logwatch to level 10...and get more info.
then decide if it is really saying you are seding 150 mails a day.
Do not forget all the mail sent to root and other systems (including logwatch) are possibly going through your postfix depending on how you set it up.
level 10 will show a lot more explanations...for my sendmail I get this..(deprecated info)
--------------------- sendmail Begin ------------------------
STATISTICS
----------
Bytes Transferred: 78684011
Messages Processed: 16120
Addressed Recipients: 16450
Message recipients per delivery agent:
Name # Rcpts
esmtp 2
local 1365
*file* 14657
---------------------
TOTAL: 16024
in addition to 6 relay
submission(s) from MSP
Message Size Distribution:
Range # Msgs KBytes
0 - 10k 14867 50340
10k - 20k 689 7524
20k - 50k 545 16496
50k - 100k 11 830
100k - 500k 8 1647
----------------------------------
TOTAL 16120 76839
Avg. Size 4
Top 10 Email Recipients
----------------------------------
(deprecated information, not for you to see online)
-------------
tons of lines of information on errors and such here....and then the last part below.
------------
Mail Rejected:
User unknown:
To: <pleagevagetop@gmail.com>: 1 Time(s)
Total: 1
Total SMTP Session, Message, and Recipient Errors handled by Sendmail: 1261
