Hello. We are running a XG310 in "Transparent" mode for SMTP. We have an e-mail filter "in front" of our Sophos that filters "in the cloud".
A sister company e-mailed maybe 75 of our employees a legitimate e-mail but Sophos only delivered it to some, citing "421 Error: too many messages in one session" in the rejection notice sent to the sender. Is there a way to disable that session limit? Our cloud filter should be "trusted" and the Sophos should allow unlimited (or at least more) messages-per-session. Thanks!
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