Q: Delayed inbound email between Sonicwall ES300 and Yosemite server
I currently have a setup consisting of a Yosemite email server with a Sonicwall ES300 as a relay.
Under moderate to heavy email traffic, I've been noticing that inbound emails (from the ES300 to the Yosemite server) begin to queue up on the ES300 with the message of ECONNRESET. This queue will sometimes rise as high as 200 emails and will eventually all clear out at once (sometimes after an hour or so). Email will flow correctly for a short period before the queue will begin to build again. This does not affect outbound or internal email. During times of low email usage (weekends), emails are rarely queued.
I've experienced this issue as well with an older server running 10.6. I'm not sure wether this is something that needs to be corrected on the Yosemite server or the ES300.
I'm curious if anyone has experienced similar issues. Is there something within main.cf or master.cf that could be rate limiting the IP of the ES300? If this is the case, it would have to be something in the default configuration since I haven't configured anything out of the ordinary. My other theory is that this could be due to high CPU usage on the ES300 causing connection issues.
Any help or ideas would be greatly appreciated.
Thanks!
Mac mini, OS X Yosemite (10.10.1)
Posted on Jan 25, 2015 6:54 PM