Bit SMTP deliverability improved after aligning SPF and DKIM

I recently cleaned up the sending domain for a WordPress site using Bit SMTP. The biggest improvement came after removing an old SPF include and confirming that DKIM matched the active sending service.

After that cleanup, test messages were much more consistent across Gmail and Outlook. It was a useful reminder that SMTP configuration and DNS alignment need to be checked together rather than treated as separate tasks.