Hello,
this night my mailcow server reported four mailcow watchdog events via e-mail, two mails because of “postfix-mailcow” and two mails because of “redis-mailcow”.
My mailcow is running on the latest version 2024-02.
At the time when the events happened the server might have done a mailcow backup (just in case this is of interest).
Currently I am a mailcow beginner, but from the logs I assume that the “MISCONF Redis is configured to save RDB snapshots, but it’s currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option).” could have something to do with the mailcow backup running in the background.
Do you have any idea what could be the problem and how to fix it?
Thanks a lot in advance,
Thomas
The reported events in the watchdog e-mails are:
Topic: Mailcow Watchdog:: postfix-mailcow
SMTP OK - 0.071 sec. response time|time=0.070851s;;;0.000000
SMTP OK - 0.101 sec. response time|time=0.100742s;;;0.000000
SMTP OK - 0.119 sec. response time|time=0.119319s;;;0.000000
SMTP OK - 0.095 sec. response time|time=0.094906s;;;0.000000
SMTP WARNING - Invalid response '503 5.5.1 Error: need MAIL command' to command 'RCPT TO:watchdog@localhost'
CRITICAL - Socket timeout
SMTP OK - 0.076 sec. response time|time=0.075762s;;;0.000000
SMTP WARNING - Invalid response '503 5.5.1 Error: need MAIL command' to command 'RCPT TO:watchdog@localhost'
CRITICAL - Socket timeout
SMTP OK - 0.102 sec. response time|time=0.102401s;;;0.000000
SMTP WARNING - Invalid response '503 5.5.1 Error: need MAIL command' to command 'RCPT TO:watchdog@localhost'
CRITICAL - Socket timeout
SMTP OK - 0.041 sec. response time|time=0.040892s;;;0.000000
SMTP WARNING - Invalid response '503 5.5.1 Error: need MAIL command' to command 'RCPT TO:watchdog@localhost'
CRITICAL - Socket timeout
SMTP OK - 0.117 sec. response time|time=0.116909s;;;0.000000
Topic: Mailcow Watchdog:: redis-mailcow
TCP OK - 0.005 second response time on redis-mailcow port 6379 [+PONG]|time=0.004563s;;;0.000000;10.000000
TCP OK - 0.008 second response time on redis-mailcow port 6379 [+PONG]|time=0.008042s;;;0.000000;10.000000
TCP OK - 0.025 second response time on redis-mailcow port 6379 [+PONG]|time=0.025377s;;;0.000000;10.000000
TCP OK - 0.002 second response time on redis-mailcow port 6379 [+PONG]|time=0.002403s;;;0.000000;10.000000
TCP OK - 0.007 second response time on redis-mailcow port 6379 [+PONG]|time=0.007182s;;;0.000000;10.000000
TCP WARNING - Unexpected response from host/socket: -MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.|time=2.005610s;;;0.000000;10.000000
TCP WARNING - Unexpected response from host/socket: -MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.|time=2.002883s;;;0.000000;10.000000
TCP WARNING - Unexpected response from host/socket: -MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.|time=2.065631s;;;0.000000;10.000000
TCP WARNING - Unexpected response from host/socket: -MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.|time=2.008519s;;;0.000000;10.000000
TCP WARNING - Unexpected response from host/socket: -MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.|time=2.022102s;;;0.000000;10.000000
Mailcow Watchdog:: postfix-mailcow
SMTP OK - 0.071 sec. response time|time=0.070851s;;;0.000000
SMTP OK - 0.101 sec. response time|time=0.100742s;;;0.000000
SMTP OK - 0.119 sec. response time|time=0.119319s;;;0.000000
SMTP OK - 0.095 sec. response time|time=0.094906s;;;0.000000
SMTP WARNING - Invalid response '503 5.5.1 Error: need MAIL command' to command 'RCPT TO:watchdog@localhost'
CRITICAL - Socket timeout
SMTP OK - 0.076 sec. response time|time=0.075762s;;;0.000000
SMTP WARNING - Invalid response '503 5.5.1 Error: need MAIL command' to command 'RCPT TO:watchdog@localhost'
CRITICAL - Socket timeout
SMTP OK - 0.102 sec. response time|time=0.102401s;;;0.000000
SMTP WARNING - Invalid response '503 5.5.1 Error: need MAIL command' to command 'RCPT TO:watchdog@localhost'
CRITICAL - Socket timeout
SMTP OK - 0.041 sec. response time|time=0.040892s;;;0.000000
SMTP WARNING - Invalid response '503 5.5.1 Error: need MAIL command' to command 'RCPT TO:watchdog@localhost'
CRITICAL - Socket timeout
SMTP OK - 0.117 sec. response time|time=0.116909s;;;0.000000
SMTP WARNING - Invalid response '503 5.5.1 Error: need MAIL command' to command 'RCPT TO:watchdog@localhost'
CRITICAL - Socket timeout
SMTP OK - 0.103 sec. response time|time=0.102683s;;;0.000000
SMTP WARNING - Invalid response '503 5.5.1 Error: need MAIL command' to command 'RCPT TO:watchdog@localhost'
CRITICAL - Socket timeout
SMTP OK - 0.246 sec. response time|time=0.245506s;;;0.000000
SMTP WARNING - Invalid response '503 5.5.1 Error: need MAIL command' to command 'RCPT TO:watchdog@localhost'
CRITICAL - Socket timeout
SMTP OK - 0.475 sec. response time|time=0.474917s;;;0.000000
SMTP WARNING - Invalid response '503 5.5.1 Error: need MAIL command' to command 'RCPT TO:watchdog@localhost'
CRITICAL - Socket timeout
SMTP OK - 0.178 sec. response time|time=0.177864s;;;0.000000
SMTP WARNING - Invalid response '503 5.5.1 Error: need MAIL command' to command 'RCPT TO:watchdog@localhost'
CRITICAL - Socket timeout
SMTP OK - 0.168 sec. response time|time=0.167993s;;;0.000000
SMTP WARNING - Invalid response '503 5.5.1 Error: need MAIL command' to command 'RCPT TO:watchdog@localhost'
CRITICAL - Socket timeout
SMTP OK - 0.106 sec. response time|time=0.106293s;;;0.000000
SMTP WARNING - Invalid response '503 5.5.1 Error: need MAIL command' to command 'RCPT TO:watchdog@localhost'
CRITICAL - Socket timeout
SMTP OK - 0.046 sec. response time|time=0.045698s;;;0.000000
SMTP WARNING - Invalid response '503 5.5.1 Error: need MAIL command' to command 'RCPT TO:watchdog@localhost'
CRITICAL - Socket timeout
SMTP OK - 0.127 sec. response time|time=0.126721s;;;0.000000
Mailcow Watchdog:: redis-mailcow
TCP OK - 0.002 second response time on redis-mailcow port 6379 [+PONG]|time=0.001664s;;;0.000000;10.000000
TCP OK - 0.001 second response time on redis-mailcow port 6379 [+PONG]|time=0.000598s;;;0.000000;10.000000
TCP OK - 0.006 second response time on redis-mailcow port 6379 [+PONG]|time=0.006255s;;;0.000000;10.000000
TCP OK - 0.005 second response time on redis-mailcow port 6379 [+PONG]|time=0.004563s;;;0.000000;10.000000
TCP OK - 0.008 second response time on redis-mailcow port 6379 [+PONG]|time=0.008042s;;;0.000000;10.000000
TCP OK - 0.025 second response time on redis-mailcow port 6379 [+PONG]|time=0.025377s;;;0.000000;10.000000
TCP OK - 0.002 second response time on redis-mailcow port 6379 [+PONG]|time=0.002403s;;;0.000000;10.000000
TCP OK - 0.007 second response time on redis-mailcow port 6379 [+PONG]|time=0.007182s;;;0.000000;10.000000
TCP WARNING - Unexpected response from host/socket: -MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.|time=2.005610s;;;0.000000;10.000000
TCP WARNING - Unexpected response from host/socket: -MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.|time=2.002883s;;;0.000000;10.000000
TCP WARNING - Unexpected response from host/socket: -MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.|time=2.065631s;;;0.000000;10.000000
TCP WARNING - Unexpected response from host/socket: -MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.|time=2.008519s;;;0.000000;10.000000
TCP WARNING - Unexpected response from host/socket: -MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.|time=2.022102s;;;0.000000;10.000000
TCP OK - 0.007 second response time on redis-mailcow port 6379 [+PONG]|time=0.007238s;;;0.000000;10.000000
TCP OK - 0.004 second response time on redis-mailcow port 6379 [+PONG]|time=0.003736s;;;0.000000;10.000000
TCP OK - 0.003 second response time on redis-mailcow port 6379 [+PONG]|time=0.002650s;;;0.000000;10.000000
TCP OK - 0.003 second response time on redis-mailcow port 6379 [+PONG]|time=0.003362s;;;0.000000;10.000000
TCP OK - 0.013 second response time on redis-mailcow port 6379 [+PONG]|time=0.013006s;;;0.000000;10.000000
TCP OK - 0.003 second response time on redis-mailcow port 6379 [+PONG]|time=0.002583s;;;0.000000;10.000000
TCP OK - 0.011 second response time on redis-mailcow port 6379 [+PONG]|time=0.010637s;;;0.000000;10.000000
TCP OK - 0.003 second response time on redis-mailcow port 6379 [+PONG]|time=0.002556s;;;0.000000;10.000000
TCP WARNING - Unexpected response from host/socket: -MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.|time=2.011978s;;;0.000000;10.000000
TCP WARNING - Unexpected response from host/socket: -MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.|time=2.016332s;;;0.000000;10.000000
TCP WARNING - Unexpected response from host/socket: -MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.|time=2.021976s;;;0.000000;10.000000
TCP WARNING - Unexpected response from host/socket: -MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.|time=2.006968s;;;0.000000;10.000000
TCP WARNING - Unexpected response from host/socket: -MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.|time=2.008642s;;;0.000000;10.000000