Hi there,
I´ve been struggling with this error for a few days when trying the SMTP Inbound mails:

I´ve already checked several notes, and the proposed solutions (with no luck) regarding this error:
- Note: 2417443
- Note: 607108
- Note: 2203325
I´ve also set the ICM Trace to level 3 during inbound mail processing, to check whats going on ... but I can´t find no hints there:

I´ve also checked:
- SICF Service SAPConnect is active. Activating and deactivating several times didn´t solve the issue.
- The logon user configured in SAPConnect has the proper profile (S_A.SCON), user is type System, and the password has been checked and re-cheched several times.
- Have run the report ICFBUFFER_INIT, ICFTREE_CONSISTENCY, REPAIR_HTTPTREE
Actual Config:
- RZ10:
- SMICM

I´m out of options here ... don´t what else to look at, or how to deep dive into this.
Any help would be greatly appreciated!
Happy new year 2023 to everyone reading this!