Cisco 3750 logs showing date as source

Hi All - I just started using Graylog to log from my Cisco 3750 switches. I am getting logs and everything looks correct except the “source” shows as the month for everything. I suspect this is due to either GROK or extractors but I am not sure how to fix this. Does anyone have experience with logging this? I have searched numerous topics and can’t seem to find an answer. Here is additional info below, thanks!

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This may be helpful, the Cisco’s are really weird about this for some reason Source name in the Cisco Firepower Syslog - #6 by jan

Thank you. Adding:

logging origin-id hostname

to my switches fixed the issue. The only thing that doesn’t look right is that I have a : at the end of the hostname but I can live with it for now. If anyone has an idea on that one let me know, thanks!

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