The message generally reads something like "Client host rejected: Too many mails sent!; email@example.com". This is usually an automatic setting from the ISP to prevent flooding or spamming. It is used in a spam blocking technique called Greylisting and it is only a temporary rejection. It's a good idea to determine the settings of each individual mailserver before sending mass mailouts to ensure that your message gets through with little delay.
Articles in this section
- Email Rate limits
- Setup a new email account in MacMail or Apple Mail
- Email account setup in Microsoft Outlook 2013 (SMTP/IMAP)
- Reducing My Email Disk Space Usage
- iPhone SSL won't turn off
- How to forward email in Mozilla Thunderbird?
- How to reply to email in Mozilla Thunderbird?
- How to delete email message in Mozilla Thunderbird?
- How to send email using Mozilla Thunderbird?
- How to check for new email in Mozilla Thunderbird?