On Tue, Sep 4, 2012 at 11:56 AM, Raphaël Berlamont <[email protected]> wrote: > 2012/9/4 Paul Tomblin <[email protected]> >> >> 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. -- http://www.linkedin.com/in/paultomblin http://careers.stackoverflow.com/ptomblin
