Topic: Server load too high, please try again later.msg denied before queued

[Bozely]

I have an old SME 10 box and currently getting

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loadcheck 902 Server load too high, please try again later. msg denied before queued
followed by

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450 Server load too high, please try again later.
in the qpsmtp logs, hardware usage looks low, maybe io, what's the best way to find out? Had some HDD issues and resolved them but the issue persists and server is bouncing external emails but delivering internal emails.

[Bozely]

fixed, to close this post, we have a backup service should the server go down that holds emails and forwards on when the server is backup, it appears looking at qpsmtpd logs that they were trying to send them all at once an creating an overload.

I temporarily increased max load and emails started to come through and clear the bottleneck.

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config setprop qpsmtpd MaxLoad 50
signal-event email-update
few things I checked in the lead up was mail queue which
ls -ltr /var/qmail/queue/mess | wc -l

check your current loadavg

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cat /proc/loadavg
which might highlight the issue
2.13 3.07 3.54 1/373 9512

which gives you three numbers for 1 minute, 5 minute and 15 minute load, running processes vs total processes and last process id.