Hello,
I'm having a problem with some emails that are stuck in SMTP server and are presenting the following message:

"SAID: 450 4.7.0 You are sending too many emails ... slow down [sender] (in reply to command)"

Is there any way to solve this problem?

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Olá,
Estou com um problema com alguns email que estão travado no servidor de SMTP e estão apresentando a seguinte mensagem:

"SAID: 450 4.7.0 you are sending too many emails... slow down[sender] (in reply to command)"

Existe alguma forma de resolver esse problema?