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Sending online newsletter.
Hi,
I am working on using GroupMail to send my newsletter. Today I wanted to send it to 2700 recipients. Half went through  I am sending mail via auth SMPT server. As I looked at the log I saw following messages
Server says: rcptcheck.c:140 IP X.X.X.X has exceeded rcpt limit of 100
553 sorry, no mailbox here by that name. (#5.1.1)
Half of the emails went through. I understand that there might be a limit as to how many emails a single ip address can send via single smtp server. Is there a way around it? I would prefer to use smpt from my email services provider. And 553, that is strange. I am able to email most of the 553 error addresses one by one from the Outlook. Any idea what is causing it?
Thanks in advance,
Alex.
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