Solved 3CX SMPT Server

[mikethelad]

Hi, I am getting, 5.7.0 Denied on doing a test email using the 3CX SMPT Server, any ideas?

 

[VasilisV_3CX]

Hi @mikethelad,

Can you provide more information? https://www.3cx.com/community/threads/information-to-provide-when-requesting-help.67558/

Can you also PM me your license key (don't attach it here publicly).

 

[VasilisV_3CX]

To reiterate and for the consideration of others:

The message you received is quite standard. It occured due to the FQDN and external IP mismatching. To resolve this, @mikethelad changed his static IP to a dynamic IP temporarily then reverted back to static. This resolved the SMTP error.

In the Management Console:

• Click Settings
• Network
• Change to Dynamic, and await DNS propagation.
• Change back to Static and ensure your FQDN and External IPs are the same