[rt-users] sendmail error (exited with code 75) - RHEL6

[Paul Tomblin]

On Tue, Sep 4, 2012 at 11:56 AM, Raphaël Berlamont
<raphael.berlamont at raphux.com> wrote:
> 2012/9/4 Paul Tomblin <ptomblin at xcski.com>
>>
>> I can't think of any reason why sendmail thinks it needs to tell the
>> mail user agent (MUA) this.  Mail Transfer Agents (MTA) like sendmail
>> should do queuing and retrying automatically.  If anybody needs to be
>> told that it's temporary failing, it's the sysadmin, not the mail
>> sender
>
>
> I agree with your conclusion, but that doesn't explain why a restart of
> apache make the thing working again... A limit somewhere ? Are there any
> tunning to do for heavy load installation ? (even if I don't really think
> that our system is under real heavy load).

What's your load average?  I seem to recall that by default sendmail
would stop delivery if the load average is above 4.0.

You can probably find more information in the mail logs.


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