My Hotmail emails are marked as spam when sent from eMClient

[AntonyM]

My Hotmail emails are marked as spam when end from eMClient, but they send OK when sent from Outlook website.
The error message is “Your message wasn’t delivered because the recipient’s email provider rejected it.
Remote server returned ‘550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)’”

[cyberzork]

@AntonyM

The error message is “Your message wasn’t delivered because the recipient’s email provider rejected it.
Remote server returned ‘550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)’”

That means there is something in either the “header, subject, or body of the email” that is suspicious so is rejected by the receiving mail server “as per your error above” when you send through your SMTP Server. See my post in the following link on that.

eM Client emails being blocked by recipient!

So thats explains why its being rejected. It contains content identified as spam. AS(4810)’ There is something in the content of your emails that is causing the recieving server to block your email when sending via your SMTP server. This can sometimes happen if you are eg: replying or forwarding an mail from other people where sometimes it has content in it that is suspicious so gets blocked at the receiving end, It can be something in the header, subject or body of the email or even in an at…

[AntonyM]

So what does the SMTP server put into the email? And how can I stop it?

Because when I sent the exact same email direct from the web mail, it sent perfectly.

[cyberzork]

@AntonyM

So what does the SMTP server put into the email? And how can I stop it?

Your SMTP server puts nothing in the email when it sends.

As I said it’s sounds like “something within your specific email” that’s being rejected, whether it’s in the header, subject or body. So If you want to find out why it’s being rejected “right click in your email body” and click “Save As” and save the .eml message on your hard-disk.

Then “contact your SMTP server technical support” and “attach the saved .eml example” email and they can advise you why it’s being rejected by the remote server.

If it’s not something in the email itself then other reasons for remote blocking can be eg: users IP addresses can sometimes be blocked if they detect possible spam, or sometimes users can be be blocked if their domain name SPF records are not updated etc.

But “from your specific error” Remote server returned ‘550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)’, it looks to me “like something within your specific email” being detected as spam which your SMTP server technical support can check for you why it’s being rejected.

In the meantime till you find out from your technical support why it’s rejected, I can only suggest to eg: try sending that same mail via an alternate SMTP server account in eM Client “such as a free Gmail or Yahoo mail” account.

Because when I sent the exact same email direct from the web mail, it sent perfectly.

Sending via http ports via webmail “is completely different than sending with a mail client” via the SMTP Server address and Server Port etc.