Memory corruption error appears on the server console or in the maillog
- Memory corruption error appears on the server console or in the maillog.
- MDC crash errors in/var/log/maillog
mithiMDC : malloc() memory corrupted.
Memory corruption error occurs if autoreply is enabled for system users like postmaster, catchall etc.
Enabling autoreply generates unnecessary mail traffic which may result various problems in mail flow.
The autoreply should not be enabled for the system users.
Disabling autoreply resolves the problem.