Hey,

First of all, best of luck with your email business. Could you please clarify what your question is? Do you search for a selfhosted email solution or do you need help with your business plan? You could explore subreddits dedicated to email marketing or business services for more tailored insights.

I had a similar problem. Solution was to deactivate IPv6 support in the routing device.

This hasn’t been asked for a while

This is quite a similar question from two days ago.

This question was also part of a survey this month.

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I asked this question this month.

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