outgoing mail issue and unbound?

[kyleholster]

Hello, so i run my cloudron server in my house, now i have done this before and had no issue with using an external smpt service for email delivery, i used mailgun and have never had an issue.

i used cloudflare for the domain (my dashboard is the only one that is proxyed)
mailgun for the smpt server

So, tested day i setup my SMPT outbound part and nothing seemed to be working. after sending 3 test emails mailgun says they sent. i check my inbox and they in fact send. so, a few hours later i send another test email and nothing........ i went into cloudflare removed all my TXT files ect and re did it , still nothing. i noticed after looking that unbound was yellow and not working might be the problem???

i also have the logs of my email that do have the 3 that confirmed and the rest that were rejected

[james]

Hello @kyleholster
Please connect to your cloudron server via ssh and run:

cloudron-support --troubleshoot

See if anything is not working.

Since you are using mailgun, maybe there was an issue with them?

[kyleholster]

Unbound is not resolving, maybe try forwarding all DNS requests. You can do this by running 'cloudron-support --unbound-use-external-dns' option
Using domain server:
Name: 127.0.0.150
Address: 127.0.0.150#53
Aliases:

i get this when i run the command and the i run the suggested command this pops up for me

/usr/bin/cloudron-support: line 803: unbound_use_external_dns: command not found

for further context, heres what the unbound logs say

Aug 03 16:51:18 bigd unbound[883]: [883:0] info: generate keytag query _ta-4f66. NULL IN
Aug 03 16:51:18 bigd unbound[883]: [883:0] info: failed to prime trust anchor -- could not fetch DNSKEY rrset . DNSKEY IN
Aug 03 16:51:18 bigd unbound[883]: [883:0] info: generate keytag query _ta-4f66. NULL IN
Aug 03 16:51:18 bigd unbound[883]: [883:0] info: failed to prime trust anchor -- could not fetch DNSKEY rrset . DNSKEY IN
Aug 03 16:51:18 bigd unbound[883]: [883:0] info: generate keytag query _ta-4f66. NULL IN
Aug 03 16:51:18 bigd unbound[883]: [883:0] info: failed to prime trust anchor -- could not fetch DNSKEY rrset . DNSKEY IN
Aug 03 16:51:18 bigd unbound[883]: [883:0] info: generate keytag query _ta-4f66. NULL IN
Aug 03 16:51:18 bigd unbound[883]: [883:0] info: failed to prime trust anchor -- could not fetch DNSKEY rrset . DNSKEY IN
Aug 03 16:51:18 bigd unbound[883]: [883:0] info: generate keytag query _ta-4f66. NULL IN
Aug 03 16:51:18 bigd unbound[883]: [883:0] info: failed to prime trust anchor -- could not fetch DNSKEY rrset . DNSKEY IN
Aug 03 17:18:36 bigd unbound[883]: [883:0] info: generate keytag query _ta-4f66. NULL IN
Aug 03 17:24:50 bigd systemd[1]: Stopping unbound.service - Unbound DNS Resolver...
Aug 03 17:24:50 bigd unbound[883]: [883:0] info: service stopped (unbound 1.19.2).
Aug 03 17:24:50 bigd unbound[883]: [883:0] info: server stats for thread 0: 515 queries, 13 answers from cache, 502 recursions, 0 prefetch, 0 rejected by ip ratelimiting
Aug 03 17:24:50 bigd unbound[883]: [883:0] info: server stats for thread 0: requestlist max 5 avg 0.727092 exceeded 0 jostled 0
Aug 03 17:24:50 bigd unbound[883]: [883:0] info: average recursion processing time 0.037127 sec
Aug 03 17:24:50 bigd unbound[883]: [883:0] info: histogram of recursion processing times
Aug 03 17:24:50 bigd unbound[883]: [883:0] info: [25%]=0.000719698 median[50%]=0.00137284 [75%]=0.0316995
Aug 03 17:24:50 bigd unbound[883]: [883:0] info: lower(secs) upper(secs) recursions
Aug 03 17:24:50 bigd unbound[883]: [883:0] info: 0.000032 0.000064 1
Aug 03 17:24:50 bigd unbound[883]: [883:0] info: 0.000064 0.000128 1
Aug 03 17:24:50 bigd unbound[883]: [883:0] info: 0.000128 0.000256 1
Aug 03 17:24:50 bigd unbound[883]: [883:0] info: 0.000256 0.000512 58
Aug 03 17:24:50 bigd unbound[883]: [883:0] info: 0.000512 0.001024 159
Aug 03 17:24:50 bigd unbound[883]: [883:0] info: 0.001024 0.002048 91
Aug 03 17:24:50 bigd unbound[883]: [883:0] info: 0.002048 0.004096 22
Aug 03 17:24:50 bigd unbound[883]: [883:0] info: 0.004096 0.008192 2
Aug 03 17:24:50 bigd unbound[883]: [883:0] info: 0.008192 0.016384 20
Aug 03 17:24:50 bigd unbound[883]: [883:0] info: 0.016384 0.032768 23
Aug 03 17:24:50 bigd unbound[883]: [883:0] info: 0.032768 0.065536 25
Aug 03 17:24:50 bigd unbound[883]: [883:0] info: 0.065536 0.131072 49
Aug 03 17:24:50 bigd unbound[883]: [883:0] info: 0.131072 0.262144 35
Aug 03 17:24:50 bigd unbound[883]: [883:0] info: 0.262144 0.524288 15
Aug 03 17:24:50 bigd systemd[1]: unbound.service: Deactivated successfully.
Aug 03 17:24:50 bigd systemd[1]: Stopped unbound.service - Unbound DNS Resolver.
Aug 03 17:24:50 bigd systemd[1]: Starting unbound.service - Unbound DNS Resolver...
Aug 03 17:24:50 bigd unbound[48589]: [48589:0] notice: init module 0: subnetcache
Aug 03 17:24:50 bigd unbound[48589]: [48589:0] notice: init module 1: validator
Aug 03 17:24:50 bigd unbound[48589]: [48589:0] notice: init module 2: iterator
Aug 03 17:24:50 bigd unbound[48589]: [48589:0] info: start of service (unbound 1.19.2).
Aug 03 17:24:50 bigd systemd[1]: Started unbound.service - Unbound DNS Resolver.
Aug 03 17:24:54 bigd unbound[48589]: [48589:0] info: generate keytag query _ta-4f66. NULL IN

[girish]

@kyleholster this is a bug in the script. You can do this manually though (see https://git.cloudron.io/platform/box/-/blob/master/scripts/cloudron-support?ref_type=heads#L576).

Add this into /etc/unbound/unbound.conf.d/forward-everything.conf :

forward-zone:
    name: "."
    forward-addr: 1.1.1.1
    forward-addr: 8.8.8.8

And then, systemctl restart unbound

[kyleholster]

Thank you all! the issue was the unbound service not working and also my email delivery issue too.