Hello to all,
I have running unbound, nsd with MX record, smtpd and dovecot on this box.
So far with good success.
The mailserver is not meant to go public.
I use to download mail from my mailproviders by means of fetchmail which I 
start on boot in daemon mode as root.

I don't want that. I want to start it on boot in daemon mode *as a user*. 

1) I would like to be able to control fetchmail by means of rcctl no matter if 
run as a user or as root if that's at all possible. I can't manage to make 
either work.

2) I can start fetchmail on boot in daemon mode as root, but I have problems 
starting fetchmail as a daemon and *as a user* on boot. I did not manage to 
figure that out.

Reason: fetchmail is started alright by rc.local as root - but to do that is 
"discouraged" for obvious security reasons.
like in /etc/rc.local:
/usr/local/bin/fetchmail -f /etc/fetchmailrc -d 600 --syslog
fetchmail is started and does its job.

I like to do it the "OpenBSD-way" but for the life of me I cannot figure out 
how to do that.

fetchmail also works OK if started manually from the shell of localuser, 
provided /etc/fetchmailrc is owned by that user.

I read the paper on rc.d by Antoine Jacoutot:
https://www.bsdfrog.org/pub/events/openbsd-rcd-AsiaBSDCon2016-paper.pdf
As I understand 'rcctl start daemon' actually does
su -l -c daemon -s /bin/sh root -c \
    "/path/to/daemon –flags"
Does that mean that my efforts to try to start fetchmail (or any daemon) as a 
user are in vain?

How else could I do that maybe while forsaking the possibility to control 
fetchmail by rcctl?

What I tried so far:

added user _fetchmail with nologin
useradd -m -c "fetchmail daemon" -d /var/fetchmail -g =uid -s /sbin/nologin 
_fetchmail

/etc/rc.d/fetchmail:
#!/bin/sh
#
# $OpenBSD: fetchmail 2017/11/16 08:12:29 localuser Exp $
#
daemon="/usr/local/bin/fetchmail"
. /etc/rc.d/rc.subr
rc_cmd $1


/etc/rc.conf.local:
dhcpd_flags="em1"
dovecot=
fetchmail_flags="-f /etc/fetchmailrc -d 600 --syslog"
fetchmail_user="_fetchmail"
inetd_flags=
mountd_flags=
newsyslog=
nfsd_flags=
nmbd_flags="-D"
nsd_flags=
pkg_scripts="dovecot fetchmail fetchnews arpwatch"
portmap_flags=
sensorsd_flags=
smbd_flags="-D"
unbound_flags=


/etc/fetchmailrc:
poll pop.somemailprovider.net protocol POP3 user "someuser@somemailserver" 
password "XXXXXXXXXX" \
is "localuser" here fetchall ssl
poll pop.somemailprovider.net protocol POP3 user 
"someotheruser@somemailserver" \
password "XXXXXXXXXX"  is "localuser" here fetchall ssl
poll pop.somemailprovider.net protocol POP3 user "somemoreuser@somemailserver" 
\
password "XXXXXXXXXXX" is "localuser" here fetchall ssl
poll pop.gmail.com protocol POP3 user "[email protected]" password 
"XXXXXXXXXX" \
is "localuser" here fetchall ssl
set postmaster [email protected]


I tried with doas -u localuser
but fetchmail is not started.
# rcctl enable fetchmail
# rcctl check fetchmail
fetchmail(failed)

and tried also with su localuser, but I gues that the latter can't work 
because the user _fetchmail has no shell.

I ask myself if it would be better to run fetchmail as a progam by cron?
adding it into /etc/crontab which allows to set the user.

Sincerly
Eike


dmesg:
OpenBSD 6.2 (GENERIC.MP) #0: Thu Oct 12 19:53:18 CEST 2017
    [email protected]:/usr/src/sys/arch/amd64/compile/
GENERIC.MP
real mem = 4261072896 (4063MB)
avail mem = 4124913664 (3933MB)
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.7 @ 0xdffb7020 (7 entries)
bios0: vendor coreboot version "88a4f96" date 03/07/2016
bios0: PC Engines apu2
acpi0 at bios0: rev 2
acpi0: sleep states S0 S1 S2 S3 S4 S5
acpi0: tables DSDT FACP SSDT APIC HEST SSDT SSDT HPET
acpi0: wakeup devices PWRB(S4) PBR4(S4) PBR5(S4) PBR6(S4) PBR7(S4) PBR8(S4) 
UOH1(S3) UOH3(S3) UOH5(S3) XHC0(S4)
acpitimer0 at acpi0: 3579545 Hz, 32 bits
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: AMD GX-412TC SOC, 998.27 MHz
cpu0: 
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,PCLMUL,MWAIT,SSSE3,CX16,SSE4.1,SSE4.2,MOVBE,POPCNT,AES,XSAVE,AVX,F16C,NXE,MMXX,FFXSR,PAGE1GB,RDTSCP,LONG,LAHF,CMPLEG,SVM,EAPICSP,AMCR8,ABM,SSE4A,MASSE,
3DNOWP,OSVW,IBS,SKINIT,TOPEXT,ITSC,BMI1
cpu0: 32KB 64b/line 2-way I-cache, 32KB 64b/line 8-way D-cache, 2MB 64b/line 
16-way L2 cache
cpu0: ITLB 32 4KB entries fully associative, 8 4MB entries fully associative
cpu0: DTLB 40 4KB entries fully associative, 8 4MB entries fully associative
cpu0: TSC frequency 998269680 Hz
cpu0: smt 0, core 0, package 0
mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges
cpu0: apic clock running at 99MHz
cpu0: mwait min=64, max=64, IBE
cpu1 at mainbus0: apid 1 (application processor)
cpu1: AMD GX-412TC SOC, 998.12 MHz
cpu1: 
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,PCLMUL,MWAIT,SSSE3,CX16,SSE4.1,SSE4.2,MOVBE,POPCNT,AES,XSAVE,AVX,F16C,NXE,MMXX,FFXSR,PAGE1GB,RDTSCP,LONG,LAHF,CMPLEG,SVM,EAPICSP,AMCR8,ABM,SSE4A,MASSE,
3DNOWP,OSVW,IBS,SKINIT,TOPEXT,ITSC,BMI1
cpu1: 32KB 64b/line 2-way I-cache, 32KB 64b/line 8-way D-cache, 2MB 64b/line 
16-way L2 cache
cpu1: ITLB 32 4KB entries fully associative, 8 4MB entries fully associative
cpu1: DTLB 40 4KB entries fully associative, 8 4MB entries fully associative
cpu1: smt 0, core 1, package 0
cpu2 at mainbus0: apid 2 (application processor)
cpu2: AMD GX-412TC SOC, 998.12 MHz
cpu2: 
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,PCLMUL,MWAIT,SSSE3,CX16,SSE4.1,SSE4.2,MOVBE,POPCNT,AES,XSAVE,AVX,F16C,NXE,MMXX,FFXSR,PAGE1GB,RDTSCP,LONG,LAHF,CMPLEG,SVM,EAPICSP,AMCR8,ABM,SSE4A,MASSE,
3DNOWP,OSVW,IBS,SKINIT,TOPEXT,ITSC,BMI1
cpu2: 32KB 64b/line 2-way I-cache, 32KB 64b/line 8-way D-cache, 2MB 64b/line 
16-way L2 cache
cpu2: ITLB 32 4KB entries fully associative, 8 4MB entries fully associative
cpu2: DTLB 40 4KB entries fully associative, 8 4MB entries fully associative
cpu2: smt 0, core 2, package 0
cpu3 at mainbus0: apid 3 (application processor)
cpu3: AMD GX-412TC SOC, 998.12 MHz
cpu3: 
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,PCLMUL,MWAIT,SSSE3,CX16,SSE4.1,SSE4.2,MOVBE,POPCNT,AES,XSAVE,AVX,F16C,NXE,MMXX,FFXSR,PAGE1GB,RDTSCP,LONG,LAHF,CMPLEG,SVM,EAPICSP,AMCR8,ABM,SSE4A,MASSE,
3DNOWP,OSVW,IBS,SKINIT,TOPEXT,ITSC,BMI1
cpu3: 32KB 64b/line 2-way I-cache, 32KB 64b/line 8-way D-cache, 2MB 64b/line 
16-way L2 cache
cpu3: ITLB 32 4KB entries fully associative, 8 4MB entries fully associative
cpu3: DTLB 40 4KB entries fully associative, 8 4MB entries fully associative
cpu3: smt 0, core 3, package 0
ioapic0 at mainbus0: apid 4 pa 0xfec00000, version 21, 24 pins
ioapic1 at mainbus0: apid 5 pa 0xfec20000, version 21, 32 pins
, remapped to apid 5
acpihpet0 at acpi0: 14318180 Hz
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus -1 (PBR4)
acpiprt2 at acpi0: bus 1 (PBR5)
acpiprt3 at acpi0: bus 2 (PBR6)
acpiprt4 at acpi0: bus 3 (PBR7)
acpiprt5 at acpi0: bus 4 (PBR8)
acpicpu0 at acpi0: C2(0@400 io@0x1771), C1(@1 halt!), PSS
acpicpu1 at acpi0: C2(0@400 io@0x1771), C1(@1 halt!), PSS
acpicpu2 at acpi0: C2(0@400 io@0x1771), C1(@1 halt!), PSS
acpicpu3 at acpi0: C2(0@400 io@0x1771), C1(@1 halt!), PSS
acpibtn0 at acpi0: PWRB
cpu0: 998 MHz: speeds: 1000 800 600 MHz
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "AMD AMD64 16h Root Complex" rev 0x00
pchb1 at pci0 dev 2 function 0 "AMD AMD64 16h Host" rev 0x00
ppb0 at pci0 dev 2 function 2 "AMD AMD64 16h PCIE" rev 0x00: msi
pci1 at ppb0 bus 1
em0 at pci1 dev 0 function 0 "Intel I210" rev 0x03: msi, address 
00:0d:b9:44:57:14
ppb1 at pci0 dev 2 function 3 "AMD AMD64 16h PCIE" rev 0x00: msi
pci2 at ppb1 bus 2
em1 at pci2 dev 0 function 0 "Intel I210" rev 0x03: msi, address 
00:0d:b9:44:57:15
ppb2 at pci0 dev 2 function 4 "AMD AMD64 16h PCIE" rev 0x00: msi
pci3 at ppb2 bus 3
em2 at pci3 dev 0 function 0 "Intel I210" rev 0x03: msi, address 
00:0d:b9:44:57:16
ppb3 at pci0 dev 2 function 5 "AMD AMD64 16h PCIE" rev 0x00: msi
pci4 at ppb3 bus 4
jme0 at pci4 dev 0 function 0 "JMicron JMC250" rev 0x03: msi, address 
d8:9d:b9:00:2b:64
jmphy0 at jme0 phy 1: JMP211 10/100/1000 PHY, rev. 1
"AMD CCP" rev 0x00 at pci0 dev 8 function 0 not configured
xhci0 at pci0 dev 16 function 0 "AMD Bolton xHCI" rev 0x11: msi
usb0 at xhci0: USB revision 3.0
uhub0 at usb0 configuration 1 interface 0 "AMD xHCI root hub" rev 3.00/1.00 
addr 1
ahci0 at pci0 dev 17 function 0 "AMD Hudson-2 SATA" rev 0x40: apic 4 int 19, 
AHCI 1.3
ahci0: port 0: 6.0Gb/s
ahci0: port 1: 6.0Gb/s
scsibus1 at ahci0: 32 targets
sd0 at scsibus1 targ 0 lun 0: <ATA, TS32GMSA370, N112> SCSI3 0/direct fixed 
t10.ATA_TS32GMSA370_C421870614_
sd0: 30533MB, 512 bytes/sector, 62533296 sectors, thin
sd1 at scsibus1 targ 1 lun 0: <ATA, ST6000VN0041-2EL, SC61> SCSI3 0/direct 
fixed naa.5000c5009367747a
sd1: 5723166MB, 512 bytes/sector, 11721045168 sectors
ehci0 at pci0 dev 19 function 0 "AMD Hudson-2 USB2" rev 0x39: apic 4 int 18
usb1 at ehci0: USB revision 2.0
uhub1 at usb1 configuration 1 interface 0 "AMD EHCI root hub" rev 2.00/1.00 
addr 1
piixpm0 at pci0 dev 20 function 0 "AMD Hudson-2 SMBus" rev 0x42: SMBus 
disabled
pcib0 at pci0 dev 20 function 3 "AMD Hudson-2 LPC" rev 0x11
sdhc0 at pci0 dev 20 function 7 "AMD Bolton SD/MMC" rev 0x01: apic 4 int 16
sdhc0: SDHC 2.0, 63 MHz base clock
sdmmc0 at sdhc0: 4-bit, sd high-speed, mmc high-speed, dma
pchb2 at pci0 dev 24 function 0 "AMD AMD64 16h Link Cfg" rev 0x00
pchb3 at pci0 dev 24 function 1 "AMD AMD64 16h Address Map" rev 0x00
pchb4 at pci0 dev 24 function 2 "AMD AMD64 16h DRAM Cfg" rev 0x00
km0 at pci0 dev 24 function 3 "AMD AMD64 16h Misc Cfg" rev 0x00
pchb5 at pci0 dev 24 function 4 "AMD AMD64 16h CPU Power" rev 0x00
pchb6 at pci0 dev 24 function 5 "AMD AMD64 16h Misc Cfg" rev 0x00
isa0 at pcib0
isadma0 at isa0
com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
com0: console
com1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
lpt0 at isa0 port 0x378/4 irq 7
wbsio0 at isa0 port 0x2e/2: NCT5104D rev 0x52
vmm0 at mainbus0: SVM/RVI
scsibus2 at sdmmc0: 2 targets, initiator 0
sd2 at scsibus2 targ 1 lun 0: <SD/MMC, SS16G, 0080> SCSI2 0/direct removable
sd2: 15193MB, 512 bytes/sector, 31116288 sectors
umass0 at uhub0 port 1 configuration 1 interface 0 "Asmedia ASM1351" rev 
3.10/1.00 addr 2
umass0: using SCSI over Bulk-Only
scsibus3 at umass0: 2 targets, initiator 0
sd3 at scsibus3 targ 1 lun 0: <ASMT, 2135, 0> SCSI4 0/direct fixed serial.
174c13511234567891CF
sd3: 3815447MB, 512 bytes/sector, 7814037168 sectors
uhub2 at uhub1 port 1 configuration 1 interface 0 "Advanced Micro Devices 
product 0x7900" rev 2.00/0.18 addr 2
vscsi0 at root
scsibus4 at vscsi0: 256 targets
softraid0 at root
scsibus5 at softraid0: 256 targets
root on sd0a (b14c7cf55471ebf4.a) swap on sd0b dump on sd0b

-- 
Eike Lantzsch ZP6CGE

Hay potentes, impotentes y prepotentes.

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