Hello Costel,
Instead of trying to guess whats the root cause please let us know:
1/ your current Axigen version and on which OS
2/ your smtpFilters.script (you could obtained it from its default location /var/opt/axigen/filters)
3/ log file related to a test for sending an outgoing message (for example to Gmail or Yahoo)
4/ log file related to a test for receiving an incoming message (for example from Gmail or Yahoo)
Note - Before making above tests please set log level to Protocol Communication for the following services:
- SMTP Receiving
- SMTP Outgoing
- Processing
- DNR
Looking forward for your data.
BR,
Ioan
PS: Usually the SPF check should be enabled only for on mailFrom with Deliver the message for cases when no SPF record or for errors in the SPF record itself - more details could be found here