Amavis 因未知原因崩溃。幸运的是，我们安装了 Monit，它会在一分钟内重新启动服务，但这只是问题的权宜之计。我们需要解决真正的问题。
在崩溃之前，存在以下日志条目/var/log/syslog：
Feb 22 17:02:20 hoa systemd[1]: Stopping LSB: Starts amavisd-new mailfilter...
Feb 22 17:02:20 hoa amavis[23039]: (23039-01) (!)TempDir removal: tempdir is to be PRESERVED: /var/lib/amavis/tmp/amavis-20170222T170218-23039-CLjT8mUN
Feb 22 17:02:20 hoa amavis[22755]: (22755-08) (!)TempDir removal: tempdir is to be PRESERVED: /var/lib/amavis/tmp/amavis-20170222T170035-22755-v7F3P0kr
Feb 22 17:02:20 hoa amavis[21924]: (21924-20) (!)TempDir removal: tempdir is to be PRESERVED: /var/lib/amavis/tmp/amavis-20170222T165050-21924-Vi1AOnu5
Feb 22 17:02:20 hoa amavis[22053]: (22053-14) (!)TempDir removal: tempdir is to be PRESERVED: /var/lib/amavis/tmp/amavis-20170222T165124-22053-V_dDmOmV
Feb 22 17:02:20 hoa postfix/10025/smtpd[22719]: disconnect from localhost[127.0.0.1]
Feb 22 17:02:20 hoa postfix/10025/smtpd[22759]: disconnect from localhost[127.0.0.1]
Feb 22 17:02:20 hoa postfix/10025/smtpd[22718]: disconnect from localhost[127.0.0.1]
Feb 22 17:02:20 hoa postfix/smtp-amavis/smtp[22710]: B07E111FD54: to=<[email protected]>, relay=127.0.0.1[127.0.0.1]:10024, delay=17, delays=0.23/14/0.31/2.3, dsn=4.3.2, status=deferred (host 127.0.0.1[127.0.0.1] said: 421 4.3.2 Service shutting down, closing channel (in reply to end of DATA command))
Feb 22 17:02:20 hoa postfix/smtp-amavis/smtp[22710]: connect to 127.0.0.1[127.0.0.1]:10024: Connection refused
Feb 22 17:02:20 hoa postfix/smtp-amavis/smtp[22709]: B07E111FD54: to=<[email protected]>, relay=127.0.0.1[127.0.0.1]:10024, delay=17, delays=0.23/14/0.08/2.6, dsn=4.3.2, status=deferred (host 127.0.0.1[127.0.0.1] said: 421 4.3.2 Service shutting down, closing channel (in reply to end of DATA command))
Feb 22 17:02:20 hoa postfix/smtp-amavis/smtp[22709]: connect to 127.0.0.1[127.0.0.1]:10024: Connection refused
Feb 22 17:02:20 hoa postfix/smtp-amavis/smtp[22708]: BFF1D11FD58: to=<[email protected]>, relay=127.0.0.1[127.0.0.1]:10024, delay=17, delays=0.23/15/0.03/2.2, dsn=4.3.2, status=deferred (host 127.0.0.1[127.0.0.1] said: 421 4.3.2 Service shutting down, closing channel (in reply to end of DATA command))
Feb 22 17:02:20 hoa postfix/smtp-amavis/smtp[22708]: connect to 127.0.0.1[127.0.0.1]:10024: Connection refused
Feb 22 17:02:20 hoa postfix/smtp-amavis/smtp[22707]: 8CDCC11FCF4: to=<[email protected]>, relay=127.0.0.1[127.0.0.1]:10024, delay=17, delays=0.38/14/0.11/2.6, dsn=4.3.2, status=deferred (host 127.0.0.1[127.0.0.1] said: 421 4.3.2 Service shutting down, closing channel (in reply to end of DATA command))
Feb 22 17:02:20 hoa postfix/smtp-amavis/smtp[22707]: connect to 127.0.0.1[127.0.0.1]:10024: Connection refused
Feb 22 17:02:20 hoa postfix/smtp-amavis/smtp[22710]: BFF1D11FD58: to=<[email protected]>, relay=none, delay=17, delays=0.23/17/0/0, dsn=4.4.1, status=deferred (connect to 127.0.0.1[127.0.0.1]:10024: Connection refused)
Feb 22 17:02:20 hoa postfix/smtp-amavis/smtp[22707]: 16B531207A6: to=<[email protected]>, relay=none, delay=17, delays=0.42/17/0/0, dsn=4.4.1, status=deferred (connect to 127.0.0.1[127.0.0.1]:10024: Connection refused)
Feb 22 17:02:20 hoa postfix/smtp-amavis/smtp[22710]: 16B531207A6: to=<[email protected]>, relay=none, delay=17, delays=0.42/17/0/0, dsn=4.4.1, status=deferred (connect to 127.0.0.1[127.0.0.1]:10024: Connection refused)
Feb 22 17:02:20 hoa postfix/smtp-amavis/smtp[22709]: E9CA411F8BA: to=<[email protected]>, relay=none, delay=4.9, delays=0.53/4.4/0/0, dsn=4.4.1, status=deferred (connect to 127.0.0.1[127.0.0.1]:10024: Connection refused)
Feb 22 17:02:20 hoa postfix/smtp-amavis/smtp[22708]: E9CA411F8BA: to=<[email protected]>, relay=none, delay=4.9, delays=0.53/4.4/0/0, dsn=4.4.1, status=deferred (connect to 127.0.0.1[127.0.0.1]:10024: Connection refused)
Feb 22 17:02:20 hoa amavis[23084]: Stopping amavisd: amavisd-new.
Feb 22 17:02:20 hoa systemd[1]: Stopped LSB: Starts amavisd-new mailfilter.
Feb 22 17:02:21 hoa systemd[1]: Starting LSB: Starts amavisd-new mailfilter...
此时，Monit 启动并且 Amavis 重新启动。
我搜索了好久，但似乎找不到问题所在。可能是服务器内存不足，但似乎没有记录任何无法分配内存的错误。因此我不确定这是否真的是问题所在。
任何帮助，将不胜感激。
答案1
继续追问下去，我认为问题确实是内存不足。我们将服务器的内存增加了一倍，这个问题还没有再次出现。然而，令我惊讶的是，没有任何日志消息表明内存是罪魁祸首。