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Courier not running on TCP4

edoniti_moitend 4 aastat tagasi 0
Using the "netstat -tulpn" command I can see that Courier process is running only on TCP6 as "7605/couriertcpd", while Exim is running on both TCP4 and TCP6. I do not see any problems at this time, but just wanted to know if this is normal?