Cloudron Forum

@jdaviescoates got it! It was the IP allowlist.

Last week I noticed a cloudron error that said:

Server is running out of disk space 2:30 PM

One or more file systems are running out of space. Please increase the disk size at the earliest.

/dev/root is at 97% capacity.

So I attempted to make my EC2 instance bigger (didn't solve the space problem, but that's for another thread). It did however change my IP address. I added the new IP to Mailgun and swaks started working properly in a few minutes.

Side note: @crazybrad I think we're mixing up marketing/bulk and transactional. I use transactional for my ghostcms so I can keep things behind an auth wall, trying to keep kids safe. My parents/members use it rarely, it's not even worth $12/mo compared to mailgun's transactional email cost which is cents/mo.

Thanks to all for the help.

@crazybrad thanks for the suggestion. I'm running a little 350 person newsletter for the parent-teacher organization in my town. Postmark looks way overpowered for what I need. There has to be something fundamentally wrong with my GhostCMS and Cloudron setup. @joseph can you point me in the right direction on how to keep troubleshooting?

Is there another way to do transactional emails from Ghost that doesn't involve going back to mailgun? Can Cloudron send from a different email address?

@luckow I verified and re-verified that I have the credentials correct (Mailgun makes you copy it to the clipboard when you make new credentials). Plus the fact that it worked a week ago, and not now . . . that would hint that it's not a credential typo right?

Roger that. Does this help?

root@17221886-0501-4fa4-8aeb-8a3025067e25:/# swaks --auth \
       --server smtp.mailgun.org:587 \
       --au postmaster@mail.tjspto.org \
       --ap PASSWORD \
       --to EMAIL \
       --h-Subject: "Hello" \
       --body 'Testing some Mailgun awesomness!'
=== Trying smtp.mailgun.org:587...
=== Connected to smtp.mailgun.org.
<-  220 Mailgun Influx ready
 -> EHLO 17221886-0501-4fa4-8aeb-8a3025067e25
<-  250-bc2e5756fbc9
<-  250-AUTH PLAIN LOGIN
<-  250-SIZE 52428800
<-  250-8BITMIME
<-  250-SMTPUTF8
<-  250-PIPELINING
<-  250 STARTTLS
 -> AUTH LOGIN
<-  334 VXNlcm5hbWU6
 -> cG9zdG1hc3RlckBtYWlsLnRqc3B0by5vcmc=
<-  334 UGFzc3dvcmQ6
 -> NjIxNWJhOGYyZTZmMDFkZGE0MjAyZTZhYTEyMjM5MjQtZjYyMDIzNzQtMzNjYjQzZWY=
<** 535 Authentication failed
 -> AUTH PLAIN AHBvc3RtYXN0ZXJAbWFpbC50anNwdG8ub3JnADYyMTViYThmMmU2ZjAxZGRhNDIwMmU2YWExMjIzOTI0LWY2MjAyMzc0LTMzY2I0M2Vm
*** Remote host closed connection unexpectedly.
root@17221886-0501-4fa4-8aeb-8a3025067e25:/# 

I also tried the other ports:

root@17221886-0501-4fa4-8aeb-8a3025067e25:/# swaks --auth \
       --server smtp.mailgun.org:465 \
       --au postmaster@mail.tjspto.org \
       --ap PASSWORD \
       --to my-personal-email@gmail.com \
       --h-Subject: "Hello" \
       --body 'Testing some Mailgun awesomness!'
=== Trying smtp.mailgun.org:465...
=== Connected to smtp.mailgun.org.
<** Timeout (30 secs) waiting for server response
 -> QUIT
<** HTTP/1.1 400 Bad Request
<** Content-Type: text/plain; charset=utf-8
<** Connection: close
<** 
*** Remote host closed connection unexpectedly.
root@17221886-0501-4fa4-8aeb-8a3025067e25:/# swaks --auth \
       --server smtp.mailgun.org:587 \
       --au postmaster@mail.tjspto.org \
       --ap PASSWORD \
       --to my-personal-email@gmail.com \
       --h-Subject: "Hello" \
       --body 'Testing some Mailgun awesomness!'
=== Trying smtp.mailgun.org:587...
=== Connected to smtp.mailgun.org.
<-  220 Mailgun Influx ready
 -> EHLO 17221886-0501-4fa4-8aeb-8a3025067e25
<-  250-dc25da1f3901
<-  250-AUTH PLAIN LOGIN
<-  250-SIZE 52428800
<-  250-8BITMIME
<-  250-SMTPUTF8
<-  250-PIPELINING
<-  250 STARTTLS
 -> AUTH LOGIN
<-  334 VXNlcm5hbWU6
 -> cG9zdG1hc3RlckBtYWlsLnRqc3B0by5vcmc=
<-  334 UGFzc3dvcmQ6
 -> NjIxNWJhOGYyZTZmMDFkZGE0MjAyZTZhYTEyMjM5MjQtZjYyMDIzNzQtMzNjYjQzZWY=
<** 535 Authentication failed
 -> AUTH PLAIN AHBvc3RtYXN0ZXJAbWFpbC50anNwdG8ub3JnADYyMTViYThmMmU2ZjAxZGRhNDIwMmU2YWExMjIzOTI0LWY2MjAyMzc0LTMzY2I0M2Vm
*** Remote host closed connection unexpectedly.

OK, cool I just ran this:

swaks --auth \
       --server smtp.mailgun.org \
       --au postmaster@mail.tjspto.org \
       --ap PASSWORD \
       --to my-personal-email@gmail.com \
       --h-Subject: "Hello" \
       --body 'Testing some Mailgun awesomness!'
=== Trying smtp.mailgun.org:25...
*** Error connecting to smtp.mailgun.org:25:
***     IO::Socket::INET: connect: timeout
root@17221886-0501-4fa4-8aeb-8a3025067e25:/# 

Does that help?

@joseph it worked fine a few weeks ago. I'm US based and haven't used any of the eu accounts/servers.

I'm using Cloudron v8.2.4, GhostCMS v4.107.0. On an AWS EC2 instance.

One of my users recently noticed that the transactional emails were not working. I had made no changes on my end. I found this in the logs when attempting to use the magic-link feature:

Mar 26 09:46:33 Failed to send email. Reason: Invalid login: 535 Authentication failed.
Mar 26 09:46:33 Failed to send email. Reason: Invalid login: 535 Authentication failed.
Mar 26 09:46:33 "Please see https://ghost.org/docs/config/#mail for instructions on configuring email."
Mar 26 09:46:33 "Please see https://ghost.org/docs/config/#mail for instructions on configuring email."
Mar 26 09:46:33
Mar 26 09:46:33
Mar 26 09:46:33 ----------------------------------------
Mar 26 09:46:33 ----------------------------------------
Mar 26 09:46:33 EAUTH
Mar 26 09:46:33 EAUTH
Mar 26 09:46:33 Error: Invalid login: 535 Authentication failed
Mar 26 09:46:33 Error: Invalid login: 535 Authentication failed
Mar 26 09:46:33 baa90ed0-0a48-11f0-adce-ad4eb2a5961f
Mar 26 09:46:33 baa90ed0-0a48-11f0-adce-ad4eb2a5961f
Mar 26 09:46:33 [2025-03-26 13:46:33] ERROR "POST /members/api/send-magic-link/" 500 349ms
Mar 26 09:46:33 [2025-03-26 13:46:33] ERROR Failed to send email. Reason: Invalid login: 535 Authentication failed.
Mar 26 09:46:33 [2025-03-26 13:46:33] INFO "GET /members/api/integrity-token/" 200 1ms
Mar 26 09:46:33 at Readable.push (node:internal/streams/readable:245:10)
Mar 26 09:46:33 at Readable.push (node:internal/streams/readable:245:10)
Mar 26 09:46:33 at SMTPConnection.<anonymous> (/home/cloudron/ghost/versions/5.109.0/node_modules/nodemailer/lib/smtp-connection/index.js:554:26)
Mar 26 09:46:33 at SMTPConnection.<anonymous> (/home/cloudron/ghost/versions/5.109.0/node_modules/nodemailer/lib/smtp-connection/index.js:554:26)
Mar 26 09:46:33 at SMTPConnection._actionAUTHComplete (/home/cloudron/ghost/versions/5.109.0/node_modules/nodemailer/lib/smtp-connection/index.js:1586:34)
Mar 26 09:46:33 at SMTPConnection._actionAUTHComplete (/home/cloudron/ghost/versions/5.109.0/node_modules/nodemailer/lib/smtp-connection/index.js:1586:34)
Mar 26 09:46:33 at SMTPConnection._formatError (/home/cloudron/ghost/versions/5.109.0/node_modules/nodemailer/lib/smtp-connection/index.js:807:19)
Mar 26 09:46:33 at SMTPConnection._formatError (/home/cloudron/ghost/versions/5.109.0/node_modules/nodemailer/lib/smtp-connection/index.js:807:19)
Mar 26 09:46:33 at SMTPConnection._onData (/home/cloudron/ghost/versions/5.109.0/node_modules/nodemailer/lib/smtp-connection/index.js:772:14)
Mar 26 09:46:33 at SMTPConnection._onData (/home/cloudron/ghost/versions/5.109.0/node_modules/nodemailer/lib/smtp-connection/index.js:772:14)
Mar 26 09:46:33 at SMTPConnection._onSocketData (/home/cloudron/ghost/versions/5.109.0/node_modules/nodemailer/lib/smtp-connection/index.js:195:44)
Mar 26 09:46:33 at SMTPConnection._onSocketData (/home/cloudron/ghost/versions/5.109.0/node_modules/nodemailer/lib/smtp-connection/index.js:195:44)
Mar 26 09:46:33 at SMTPConnection._processResponse (/home/cloudron/ghost/versions/5.109.0/node_modules/nodemailer/lib/smtp-connection/index.js:991:20)
Mar 26 09:46:33 at SMTPConnection._processResponse (/home/cloudron/ghost/versions/5.109.0/node_modules/nodemailer/lib/smtp-connection/index.js:991:20)
Mar 26 09:46:33 at TLSSocket.emit (node:events:517:28)
Mar 26 09:46:33 at TLSSocket.emit (node:events:517:28)
Mar 26 09:46:33 at TLSWrap.onStreamRead (node:internal/stream_base_commons:190:23)
Mar 26 09:46:33 at TLSWrap.onStreamRead (node:internal/stream_base_commons:190:23)
Mar 26 09:46:33 at addChunk (node:internal/streams/readable:335:12)
Mar 26 09:46:33 at addChunk (node:internal/streams/readable:335:12)
Mar 26 09:46:33 at createMailError (/home/cloudron/ghost/versions/5.109.0/core/server/services/mail/GhostMailer.js:81:12)
Mar 26 09:46:33 at createMailError (/home/cloudron/ghost/versions/5.109.0/core/server/services/mail/GhostMailer.js:81:12)
Mar 26 09:46:33 at readableAddChunk (node:internal/streams/readable:308:9)
Mar 26 09:46:33 at readableAddChunk (node:internal/streams/readable:308:9)
Mar 26 09:46:33 BoxError: Not enough disk space for backup. Needed: 1.54GB Available: 1.26GB
Mar 26 09:46:33 BoxError: Not enough disk space for backup. Needed: 1.55GB Available: 1.22GB
Mar 26 09:46:33 }
Mar 26 09:46:33 }

Looking at my email settings this is what I've got:

Clicking on the domain

I reset my password in Mailgun in my outbound email settings, I know it has the right username and password, but I'm still getting the same error. Can anyone help me figure this one out? I tried following the docs, but they are hard to follow.

They still aren't happy with v5.108.2 and recommend rolling back.

https://forum.ghost.org/t/html-encoding-issue-in-emails-nbsp-amp-etc/54798/18

Any guidance on how to do this in my cloudron deployment? My members are getting cranky.