mkuron
commented
3 years ago The problem is, the mailcow don't get the MX register from the new address, just connect directly on port 25 in the A registered IP.
In my test, recipient maps are correctly using the MX of the destination address.
dig amakhaparis.neoassist.com amakhaparis.neoassist.com. 300 IN CNAME cdn-02.atendimen.to. [...] In this case, the MX record from this server points to mailgun.com
That domain name does not currently have an MX record. As a result (and per the SMTP standard), it falls back to the A record. So what you're seeing is correct behavior and you just need to make sure to actually set the MX record that points to mailgun. Note that if you have a CNAME record on a domain name, you cannot have any other records on that same domain name. You'd need to put the MX on the domain that the CNAME points to or replace the CNAME with direct A records.
marioolofo
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Xonce done)Summary
I have a redirect from sac@amakhaparis.com.br to sac@amakhaparis.neoassist.com, and it was added in the Recipient Maps on the Address Rewritting tab. The problem is, the mailcow don't get the MX register from the new address, just connect directly on port 25 in the A registered IP. For example:
dig amakhaparis.neoassist.com
;; ANSWER SECTION: amakhaparis.neoassist.com. 300 IN CNAME cdn-02.atendimen.to. cdn-02.atendimen.to. 49 IN A 172.67.27.34 cdn-02.atendimen.to. 49 IN A 104.22.73.177 cdn-02.atendimen.to. 49 IN A 104.22.72.177
In this case, the MX record from this server points to mailgun.com
But when the redirect occours, the log I got is this:
23/02/2021 21:00:59 | info | 100228203C: to=sac@amakhaparis.neoassist.com, relay=none, delay=123951, delays=123860/1.1/90/0, dsn=4.4.1, status=deferred (connect to amakhaparis.neoassist.com[172.67.27.34]:25: Connection timed out) 23/02/2021 21:00:59 | info | connect to amakhaparis.neoassist.com[172.67.27.34]:25: Connection timed out 23/02/2021 21:00:58 | info | 2CD8F82329: to=sac@amakhaparis.neoassist.com, orig_to=sac@amakhacosmeticos.com.br, relay=none, delay=110484, delays=110393/0.57/90/0, dsn=4.4.1, status=deferred (connect to amakhaparis.neoassist.com[172.67.27.34]:25: Connection timed out)
You can see that the mail is been sent to the amakhaparis.neoassist.com IP, not the mailgun one =/
The mailcow instance was updated via ./update.sh today, bellow is the version installed: Found tag 1.8 for mailcow/unbound, which is older than the current tag 1.13 and should be deleted. Found tag 1.28 for mailcow/clamd, which is older than the current tag 1.38 and should be deleted. Found tag 1.45 for mailcow/rspamd, which is older than the current tag 1.76 and should be deleted. Found tag 1.43 for mailcow/phpfpm, which is older than the current tag 1.73 and should be deleted. Found tag 1.58 for mailcow/sogo, which is older than the current tag 1.95 and should be deleted. Found tag 1.86 for mailcow/dovecot, which is older than the current tag 1.140 and should be deleted. Found tag 1.37 for mailcow/postfix, which is older than the current tag 1.59 and should be deleted. Found tag 1.61 for mailcow/acme, which is older than the current tag 1.77 and should be deleted. Found tag 1.28 for mailcow/netfilter, which is older than the current tag 1.39 and should be deleted. Found tag 1.56 for mailcow/watchdog, which is older than the current tag 1.88 and should be deleted. Found tag 1.32 for mailcow/dockerapi, which is older than the current tag 1.38 and should be deleted. Found tag 1.6 for mailcow/solr, which is older than the current tag 1.7 and should be deleted. Found tag 1.1 for mailcow/olefy, which is older than the current tag 1.6 and should be deleted.
Logs
Reproduction
It appears that the problem is to create a Recipient Map rule to a server that don't host it's own mailserver, the MX entry from the recipient is ignored.
System information
docker version)docker-compose version)git diff origin/master, any other changes to the code? If so, please post them.iptables -L -vn,ip6tables -L -vn,iptables -L -vn -t natandip6tables -L -vn -t nat.docker exec -it $(docker ps -qf name=acme-mailcow) dig +short stackoverflow.com @172.22.1.254(set the IP accordingly, if you changed the internal mailcow network) and post the output.