Apache crashing Invalid argument: couldn’t grab the accept mutex

Apache sometimes crashes, outcome from the Apache error_log strike this error. (22)Invalid argument: couldn’t grab the accept mutex (22)Invalid argument: couldn’t grab the accept mutex (22)Invalid argument: couldn’t grab the accept mutex (22)Invalid argument: couldn’t grab the accept mutex (22)Invalid argument: couldn’t grab the accept mutex (22)Invalid argument: couldn’t grab the accept mutex (22)Invalid argument: […]

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Error: Domain domain.com has exceeded the max defers and failures per hour (5/5 (100%)) allowed

One of our client was getting email failure messages from a domain name  hosted on our server, The error was like: [wpfmb type=’error’ theme=2]“Domain domain.com has exceeded the max defers and failures per hour (5/5 (100%)) allowed” .[/wpfmb] This error occurs when an account sends email to addresses that fail or defer more than the […]

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