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My email blast to 500 subscribers all bounced last Tuesday and I figured out why
I sent out a newsletter I spent 3 hours writing and boom, every single one bounced back. Turns out my domain's SPF record was missing a line for the email service I switched to last month. I spent the whole afternoon fixing DNS settings and now I double check that stuff before hitting send. Anyone else ever have a simple tech setup wreck a whole campaign like that?
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fiona_kim5d ago
DNS, the silent career wrecker.
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the_olivia5d ago
Make sure you have local log files that actually capture what the resolver is doing, not just the DNS server logs. Most people don't realize that DNS logging defaults are basically useless for debugging. Also, keep a separate caching server that you can point stuff at while you rebuild the primary one. Saved me a few times when I hosed something at 2 AM.
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