Some emails bouncing with 450 4.7.1 error

A

Alvin63

Well-known member
This happens once a week when the weekly newsletter goes out. About 12 emails to 12 members bounce with this error and come up as a server error. I only have about 250 members at the moment, so won't be exceeding the email quota (I think). I noticed the IP address is an IPV6 one. Any ideas? I'm wondering if they're all gmail addresses and google doesn't like something. I have DMarc, SPF and DKIM set up via cloudflare.

Edit it shows the email addresses in the server error - they're not all gmail - there's a whole range of email providers in there: gmail, hotmail, icloud, yahoo.
 
Last edited:
Alvin63 said:
This happens once a week when the weekly newsletter goes out. About 12 emails to 12 members bounce with this error and come up as a server error. I only have about 250 members at the moment, so won't be exceeding the email quota (I think). I noticed the IP address is an IPV6 one. Any ideas? I'm wondering if they're all gmail addresses and google doesn't like something. I have DMarc, SPF and DKIM set up via cloudflare.

Edit it shows the email addresses in the server error - they're not all gmail - there's a whole range of email providers in there: gmail, hotmail, icloud, yahoo.
Click to expand...

Just to add that I use gmail and I received your newsletter earlier today :)
 
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