I have successfully installed MailCow on Arch Linux. It is running without issue.
I was just curious if any of the devs would like some info that I would be happy to provide if it would help others to use Arch for there Mailcow.
I am keeping Arch updated daily and have no issues so far.
Here is my system info:

System:
  Host: mail Kernel: 6.1.30-1-lts arch: x86_64 bits: 64 compiler: gcc
    v: 13.1.1 Desktop: Xfce v: 4.18.1 tk: Gtk v: 3.24.36 info: xfce4-panel
    wm: xfwm v: 4.18.0 dm: SDDM Distro: ArcoLinux base: Arch Linux
Machine:
  Type: Desktop System: Dell product: PowerEdge T30 v: N/A serial: 7G1V172
    Chassis: type: 6 serial: 7G1V172
  Mobo: Dell model: 07T4MC v: A00 serial: /7G1V172/CN722006AS02HQ/
    UEFI-[Legacy]: Dell v: 1.0.0 date: 09/05/2016
CPU:
  Info: dual core model: Intel Pentium G4400 bits: 64 type: MCP
    smt: <unsupported> arch: Skylake-S rev: 3 cache: L1: 128 KiB L2: 512 KiB
    L3: 3 MiB
  Speed (MHz): avg: 800 high: 801 min/max: 800/3300 volts: 1.0 V
    ext-clock: 100 MHz cores: 1: 801 2: 800 bogomips: 13205
  Flags: ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
Graphics:
  Device-1: Intel HD Graphics 510 vendor: Dell driver: i915 v: kernel
    arch: Gen-9 ports: active: HDMI-A-1 empty: DP-1, DP-2, DP-3, HDMI-A-2,
    HDMI-A-3 bus-ID: 00:02.0 chip-ID: 8086:1902 class-ID: 0300
  Display: server: X.Org v: 21.1.8 compositor: xfwm v: 4.18.0 driver: X:
    loaded: modesetting alternate: fbdev,intel,vesa dri: iris gpu: i915
    display-ID: :0.0 screens: 1
  Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x285mm (20.00x11.22")
    s-diag: 582mm (22.93")
  Monitor-1: HDMI-A-1 mapped: HDMI-1 model: Acer G215HV serial: LRN080024220
    res: 1920x1080 hz: 60 dpi: 102 size: 477x268mm (18.78x10.55")
    diag: 547mm (21.5") modes: max: 1920x1080 min: 720x400
  API: OpenGL Message: Unable to show GL data. Required tool glxinfo
    missing.
Audio:
  Device-1: Intel 100 Series/C230 Series Family HD Audio vendor: Dell
    driver: snd_hda_intel v: kernel bus-ID: 00:1f.3 chip-ID: 8086:a170
    class-ID: 0403
  API: ALSA v: k6.1.30-1-lts status: kernel-api
  Server-1: JACK v: 1.9.22 status: off
Network:
  Device-1: Intel Ethernet I219-LM vendor: Dell driver: e1000e v: kernel
    port: N/A bus-ID: 00:1f.6 chip-ID: 8086:15b7 class-ID: 0200
  IF: enp0s31f6 state: up speed: 1000 Mbps duplex: full
    mac: 48:4d:7e:d8:ec:18
  IF-ID-1: br-mailcow state: up speed: 10000 Mbps duplex: unknown
    mac: 02:42:55:7a:04:75
  IF-ID-2: docker0 state: down mac: 02:42:b5:68:da:db
  IF-ID-3: veth06bccbe state: up speed: 10000 Mbps duplex: full
    mac: 0e:21:8e:1c:19:ba
  IF-ID-4: veth06e3bbc state: up speed: 10000 Mbps duplex: full
    mac: e6:5a:34:6f:60:f5
  IF-ID-5: veth383372a state: up speed: 10000 Mbps duplex: full
    mac: 46:62:7b:bf:e0:55
  IF-ID-6: veth487dba0 state: up speed: 10000 Mbps duplex: full
    mac: 2e:e6:03:b9:c0:69
  IF-ID-7: veth4d0b0f0 state: up speed: 10000 Mbps duplex: full
    mac: fe:41:e3:e5:4a:41
  IF-ID-8: veth4eded0a state: up speed: 10000 Mbps duplex: full
    mac: 1e:1e:c2:eb:ab:ae
  IF-ID-9: veth5e87721 state: up speed: 10000 Mbps duplex: full
    mac: ce:87:88:f4:a3:b8
  IF-ID-10: veth8ab653f state: up speed: 10000 Mbps duplex: full
    mac: 0a:c5:ae:0e:86:d2
  IF-ID-11: veth926f4e7 state: up speed: 10000 Mbps duplex: full
    mac: 42:fa:26:95:c9:34
  IF-ID-12: veth977ea82 state: up speed: 10000 Mbps duplex: full
    mac: ea:8c:8f:31:ea:b6
  IF-ID-13: vetha882f91 state: up speed: 10000 Mbps duplex: full
    mac: ce:54:f9:94:89:7c
  IF-ID-14: vethafc3df5 state: up speed: 10000 Mbps duplex: full
    mac: 7e:2b:69:2c:38:6f
  IF-ID-15: vethd05cb05 state: up speed: 10000 Mbps duplex: full
    mac: 66:70:54:45:7e:24
  IF-ID-16: vethd09517a state: up speed: 10000 Mbps duplex: full
    mac: 5e:0a:d7:ca:2d:56
  IF-ID-17: vethe7bbb70 state: up speed: 10000 Mbps duplex: full
    mac: 5e:3e:5e:ed:37:d3
  IF-ID-18: vethf13e07f state: up speed: 10000 Mbps duplex: full
    mac: 02:4b:b1:a0:71:15
  IF-ID-19: vethf31f17d state: up speed: 10000 Mbps duplex: full
    mac: e6:9d:9d:b9:8a:5f
RAID:
  Hardware-1: Intel SATA Controller [RAID mode] driver: ahci v: 3.0 port: f060
    bus-ID: 00:17.0 chip-ID: 8086:2822 rev: N/A class-ID: 0104
Drives:
  Local Storage: total: 931.51 GiB used: 16.9 GiB (1.8%)
  ID-1: /dev/sda vendor: Toshiba model: DT01ACA100 size: 931.51 GiB
    speed: 6.0 Gb/s tech: HDD rpm: 7200 serial: X6NV3APMS fw-rev: A810
    scheme: MBR
Partition:
  ID-1: / size: 39.07 GiB used: 14.15 GiB (36.2%) fs: ext4 dev: /dev/sda9
  ID-2: /home size: 97.87 GiB used: 2.75 GiB (2.8%) fs: ext4 dev: /dev/sda10
Swap:
  ID-1: swap-1 type: partition size: 3.87 GiB used: 0 KiB (0.0%) priority: -2
    dev: /dev/sda5
Sensors:
  System Temperatures: cpu: 29.0 C pch: 52.5 C mobo: N/A
  Fan Speeds (RPM): N/A
Info:
  Processes: 376 Uptime: 3d 19h 0m wakeups: 0 Memory: available: 31.22 GiB
  used: 7.71 GiB (24.7%) Init: systemd v: 253 default: graphical Compilers:
  gcc: 13.1.1 Packages: pm: pacman pkgs: 773 Shell: Bash (sudo) v: 5.1.16
  running-in: alacritty inxi: 3.3.27
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