Okay, so today I decided to figure out what this “550” thing means that I’ve been seeing pop up all over the place. It’s been bugging me, so I thought, “Let’s just get to the bottom of this.”
Digging Around
First, I hit up my usual search engine. I just typed in “550 meaning” and hoped for the best. I scrolled through a bunch of results, a lot of technical stuff at first which made my eyes glaze over.
I finally started seeing some stuff related to email errors. It became more clear about the email sending issues. So, it seemed to be related to emails.

Getting More Specific
I refined my search, and refined again, adding “email error” to my search terms to narrow things down.
- I found a couple of forum posts where people were complaining about getting “550” errors when they tried to send emails.
- I noticed most forums were talking the similar issues, and solutions, like checking receiver’s email address.
It’s not the receiver’s address, that I already confirmed before. So I keep trying.
Putting It All Together
So I checked my email setting again, and found that one of my settings was not correct!
Finally, I fixed all settings, and resend the email, and no more “550” errors. It is so easy and simple if you follow the right steps!
I’m glad I finally figured this out! No more mysterious “550” errors for me!