Comcast rate limiting


Russell from Port25 posted a comment on my earlier post about changes at Comcast.

Our (Port25) understanding is that Comcast is rate limiting such that they’re only accepting 6 recipients per second per sending IP.

This matches what I’ve been hearing from other bits of the industry over the last few days. I am recommending clients close the connection between each set of 6 email addresses.

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By laura

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