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The SMTP server requires a secure connection or other problems when sending file on gmail now solved

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SMTP Error (530) 5.7.0 Must issue a STARTTLS command first

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Resolving the Handshake Failed Error in SMTP Connections with SendGrid

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Resolving the Unable to connect with STARTTLS Error in Laravel 9 Email Configuration

SMTP Error (530) 5.7.0 Must issue a STARTTLS command first

Resolving the SMTP.starttls() TimeoutError on Windows 10

Unix: SMTP Error (530) 5.7.0 Must issue a STARTTLS command first

Resolving the 530 5.7.0 Must issue a STARTTLS command first Error in DotProject

Understanding the "Must Issue a STARTTLS Command First" Error in Email Clients

Fixing the STARTTLS Error When Using Gmail in Django