Question

3

Nullmailer in /var/log/syslog

rated 0 times [ 3] [ 0] / answers: 1 / hits: 12726 / 1 Year ago, mon, april 3, 2023, 9:19:16

I'm getting a lot of messages like these:

me@home:/etc/snmp$ tail /var/log/syslog

Jun 12 17:52:15 home nullmailer[1238]: Starting delivery: protocol: smtp host: mail. file: 1339502401.24665

Jun 12 17:52:15 home nullmailer[7086]: smtp: Failed: Connect failed

Jun 12 17:52:15 home nullmailer[1238]: Sending failed:  Host not found

Jun 12 17:52:15 home nullmailer[1238]: Starting delivery: protocol: smtp host: mail. file: 1339174804.27614

Jun 12 17:52:15 home nullmailer[7087]: smtp: Failed: Connect failed

Jun 12 17:52:15 home nullmailer[1238]: Sending failed:  Host not found

Jun 12 17:52:15 home nullmailer[1238]: Starting delivery: protocol: smtp host: mail. file: 1339324201.21737

Jun 12 17:52:15 home nullmailer[7088]: smtp: Failed: Connect failed

Jun 12 17:52:15 home nullmailer[1238]: Sending failed:  Host not found

Jun 12 17:52:15 home nullmailer[1238]: Delivery complete, 331 message(s) remain.

The problem is, I don't recall sending anything. How do I find out which software is sending these messages? How do I read them?

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issfullus

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answered 1 Year ago ipentainer · Accepted Answer

To see the contents of one of the messages in the queue, try something like this: (obviously replacing the numeric filename with an actual one from your syslog)

$ sudo cat /var/spool/nullmailer/queue/1347323616.6506

Note that you have to use either sudo or be logged in as root due to permissions on the queue subdir and files.