>>> check hosts = +ignore_unknown : non.existent.invalid : V4NET.0.0.13
>>> no IP address found for host non.existent.invalid (during SMTP connection from [V4NET.0.0.13])
LOG: no IP address found for host non.existent.invalid (during SMTP connection from [V4NET.0.0.13])
>>> failed to find IP address for non.existent.invalid: item ignored by +ignore_unknown
>>> host in "+ignore_unknown : non.existent.invalid : V4NET.0.0.13"? yes (matched "V4NET.0.0.13")
>>> check hosts = +ignore_unknown : non.existent.invalid : V4NET.0.0.13
>>> no IP address found for host non.existent.invalid (during SMTP connection from [V4NET.0.0.13])
LOG: no IP address found for host non.existent.invalid (during SMTP connection from [V4NET.0.0.13])
>>> failed to find IP address for non.existent.invalid: item ignored by +ignore_unknown
>>> host in "+ignore_unknown : non.existent.invalid : V4NET.0.0.13"? yes (matched "V4NET.0.0.13")