Hi there,

Our sports organization is having an issue with just our parents that have shaw email accounts where sometimes our email messages are bouncing with the following error (I've omitted the part that references the specific mailbox for privacy reasons:

shw-central.mx.a.cloudfilter.net[3.96.81.40]
said: 421 4.1.0 <youthrugby@jbaa.ca> server temporarily unavailable
AUP#MXRT (in reply to MAIL FROM command)

<eventservice@shaw.ca>: host
shw-central.mx.a.cloudfilter.net[3.96.81.40] said:
421 4.1.0 <youthrugby@jbaa.ca> server temporarily unavailable
AUP#MXRT (in
reply to MAIL FROM command)

Can you shed light on what the issue might be? It is intermittent, which is extra puzzling. We want to make sure these parents are getting our messages.

Thanks in advance!