Solved New install of Standard smtp error 5.7.0

[AJ247]

Hi

I understand 3cx standard uses 3cx smtp but on clicking the option we get access denied error 5.7.0 - we have checked firewall port 2528 is open, is there anything else we can look at to resolve?

 

[JohnS_3CX]

Hi,

The 3CX FQDN IP must match the public IP on PBX. If this is not matched, the 3CX mail server will reject your requests.

Has there been a change recently? ie. are you on a dynamic public IP?

 

[AJ247]

Hi

We're on a static ip and the fqdn has been tested with google and resolves correctly,

 

[AJ247]

Hi john
This did turn out to be a firewall rule blocking 2528, so all sorted now, many thanks

 

[ChrisC_3CX]

@AJ247

Glad to see you got this resolved!

Please feel free to start a new thread should you need anything else.