Why do I get a '550 Relay Not Permitted' error message when sending mail?

19/12/2017 11:26 AM
- Email
- Troubleshooting

Some ISPs block port 25 for the sending of email via SMTP. AOL and Orange are known to be amongst such ISPs, though there are also others. If this happens, setting SMTP to port 587 instead of port 25 should allow you to send email through us.

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Why do I get a '550 Relay Not Permitted' error message when sending mail?

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