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I would like to ask is there any limit email receiving from Yahoo or Gmail per domain/IP.
Reason I ask is, some email to yahoo bounce back. Below is the reason from yahoo
Reason: Remote host said: 550 Sending to yahoo.com is not allowed
If I try to resend the next day, the email went through without any problem.
We once a month will send a large amount of email to our member (2000-2500).
Out of the number of member, we not sure how many account are yahoo account.
Our membership system will generate the email for all the member and import into outlook to send.
I afraid the number of yahoo email account exceeded the allow limit per day per domain which causing some email bounce back from yahoo.
I try to Google but all mention about sending limit and no info about receiving limit.