Cloudflare Developers•2y ago

ohm, sometimes MailChannel just doesn't send any email 😳

ohm, sometimes MailChannel just doesn't send any email

CChaika Gmail. You can't send mail via Cloudflare except via Workers to your verified ad...

dave•2/7/24, 4:56 PM

we have outgoing emails from Gmail going through a Cloudflare Worker, but it's a messed up setup lol

Cchientrm.com ohm, sometimes MailChannel just doesn't send any email 😳

Unsmart•2/7/24, 5:09 PM

Afaik it will silently block any email they consider spam so the request wont error but not really sure on how that stuff works

UUnsmart Afaik it will silently block any email they consider spam so the request wont er...

chientrm.comOP•2/7/24, 5:29 PM

Uhm, I took some debug. It was my Pages CPU timeout when invoking bounded my email Workers

chientrm.comOP•2/7/24, 5:30 PM

I took some work around and now it sends email nicely again

Unsmart•2/7/24, 5:30 PM

That will do it too :LUL:

UUnsmart That will do it too :LUL:

chientrm.comOP•2/7/24, 5:31 PM

it's weird, they're just

fetch

fetch

from my Pages to bounded Mail Workers and from the Workerse to Mailchannels.
There was no heavy computation

chientrm.comOP•2/7/24, 5:32 PM

But when the request from my Pages -> Proxy express.js server -> Mail workers, it works fine again, no

Cancelled

Cancelled

chientrm.comOP•2/7/24, 6:05 PM

oh, just invoke via https url is fine, no timeout

KNOX•2/7/24, 8:29 PM

How do i set up a worker so that when a specific email address receives an email it gets sent to my server via an http post request?

Adi•2/8/24, 12:44 AM

Hey all, I'm sure this is a noob question, but is it possible / is there a walkthrough on how to send outbound emails via cloudflare?
I have email routing setup, but now I want to send emails out via that domain. Specifically looking for a low cost / free way of doing so.

Adi•2/8/24, 1:06 AM

I retract my question. For anyone else, this guide worked amazingly well - https://jay.gooby.org/2022/05/06/use-a-basic-gmail-account-to-send-mail-as-with-a-domain-that-uses-cloudflare-email-routing

AAdi I retract my question. For anyone else, this guide worked amazingly well - https...

DarkDeviL•2/8/24, 2:03 AM

"Amazingly well"?

I strongly suggest that you look at:

email-routing

https://community.cloudflare.com/t/reply-from-a-custom-address-email/455857/7

Adi•2/8/24, 2:05 AM

Yes you're right. It's not a perfect solution, and I definitely noticed the "sent via gmai" mark that never leaves. But I suppose this is as far as it can go with the way email routing works right?

DarkDeviL•2/8/24, 2:05 AM

And then remove the "

a mx include:_spf.google.com

a mx include:_spf.google.com

" part from your SPF.

: Cloudflare HTTP Reverse Proxies will never send on your domain's behalf.

mx

mx

: Is pointing to Cloudflare's INBOUND mail servers, they do NOT send OUTBOUND and should not be listed in your SPF.

include:_spf.google.com

include:_spf.google.com

: The "trick" will always authenticate as the

@gmail.com

@gmail.com

, and expose the real Gmail address. Since the SPF is done on

gmail.com

gmail.com

, you're overauthorizing by having

include:_spf.google.com

include:_spf.google.com

, which - depending on the eyes looking at it, is a security issue / risk.

DDarkDeviL And then remove the "`a mx include:_spf.google.com`" part from your SPF. `a`: C...

Adi•2/8/24, 2:07 AM

Oh dang, really good points! Will make those changes, thanks.

AAdi Yes you're right. It's not a perfect solution, and I definitely noticed the "sen...

DarkDeviL•2/8/24, 2:08 AM

That "send via gmail" is due to the authentication marks being done on

@gmail.com

@gmail.com

, getting it away would require a proper email service, that would authenticate using your own domain.

DarkDeviL•2/8/24, 2:09 AM

None of the free hacky workarounds such as this would do so (... 100%).

DDarkDeviL That "send via gmail" is due to the authentication marks being done on `@gmail.c...

Adi•2/8/24, 2:09 AM

Makes sense, so there's basically no alternative to actually purchasing or setting up an actual email service.

DarkDeviL•2/8/24, 2:09 AM

In fact, even some paid ones may not even allow you get such things completely away.

DarkDeviL•2/8/24, 2:10 AM

And nope, the stuff i mention in e.g. the Discord link above - about missing alignment

DarkDeviL•2/8/24, 2:11 AM

1&1/GMX/

Web.de

Web.de

and others announced three (or four?) years ago I believe, regarding "no-alignment = slow entry"

DarkDeviL•2/8/24, 2:11 AM

Google ramped up their requirements in Oct or Nov 2022

DarkDeviL•2/8/24, 2:11 AM

And lately, both Google and Yahoo ramped them up here per February 2024.

DarkDeviL•2/8/24, 2:12 AM

You aren't able to satisfy the latest February 2024 requirements with a hacky workaround set up like this.

DarkDeviL•2/8/24, 2:13 AM

Although it appears Google and Yahoo claims it is affecting senders with 5.000 or more messages, ... the mystery remains: What exactly are they counting the 5.000 messages on?

DarkDeviL•2/8/24, 2:14 AM

Google's mail servers itself send quite a bit more than 5.000 messages per day, so Google might only need 5.000 different users, sending one message per day, to hit you negatively...

DarkDeviL•2/8/24, 2:15 AM

-> Due to the lack of proper email authentication

Adi•2/8/24, 2:15 AM

Damn

I suppose, do you have a recommendation for cost efficient email?

Adi•2/8/24, 2:15 AM

Also, thanks for taking the time to explain in so much detail, it's very appreciated

DarkDeviL•2/8/24, 2:19 AM

Well, I have always been a happy self-hoster of email, and are still doing so in 2024, and doing so very well and problem free.

DarkDeviL•2/8/24, 2:20 AM

The vast majority (if not all) that I've seen complaining about self-hosting email not working properly, is literally always due to their own failures to make proper choices, - e.g. many of them are choosing bad providers that continuously house spammers, or otherwise lack proper "abuse handling".

DarkDeviL•2/8/24, 2:20 AM

Or otherwise fail to configure the stuff properly, - although it isn't harder than e.g. running your own web server or so.

DarkDeviL•2/8/24, 2:21 AM

Re. providers, you definitely want to avoid the cheapest cloud providers that are popping up on the first few pages of Google searches, - if you go a such way.

DarkDeviL•2/8/24, 2:21 AM

That said, I'm not always saying that self-hosting will be the way to go.

DarkDeviL•2/8/24, 2:23 AM

"Cost efficient" is very depending on your opinion of it though, $10/month could be cheap for one, but too expensive for another and so on.

DarkDeviL•2/8/24, 2:26 AM

https://mxroute.com/ offers yearly packages, depending on your storage requirements

DarkDeviL•2/8/24, 2:30 AM

(And even seem (from time to time) to offer a life time package for low volume users.)

DDarkDeviL "Cost efficient" is very depending on your opinion of it though, $10/month could...

Adi•2/8/24, 2:42 AM

Well let me put it this way, The top end would be google workspaces, which is eye wateringly expensive.
For our personal usecase, we don't need a high number of email addresses. But we do need a good way of sharing credentials / access among our team. And yeah, deliverability is a priority.
Honestly $10 - $20 a month is fine as long as we're not restricted on the number of domains / accounts we can use.
As far as storage goes, we would probably need around 20 - 50gb (looking into long term)

KNOX•2/8/24, 8:59 PM

How do i set up a worker so that when a specific email address receives an email it gets sent to my server via an http post request?

flux_ray•2/11/24, 11:27 AM

Hi, how can I get the email content with cloudflare workers owo?

aswinbenny•2/12/24, 1:26 AM

I am thinking of connecting my custom domain for forwarding email.

I will set catchall to fwd.mydomain.com in cloudflare routing.

Can I use the workers in such a way that certain mails coming to address that are added to KV like spam@fwd.mydomain.com are rejected?

Is there a better option other KV to stored these emails addresses that should be rejected?

Also is it possible to setup workers in such a way that I can send emails via the custom domain I setup?

fratell•2/17/24, 7:54 PM

@DarkDeviL what if i want get email for custom domain?

Ffratell @DarkDeviL what if i want get email for custom domain?

DarkDeviL•2/17/24, 8:02 PM

Does "get" mean just to receive emails, or also to send?

Receiving can be done at no cost through the #email-routing product, assuming you have another mailbox behind it.

However, if you're also looking for something to send, with the custom domain I will say that it would appea to cross a bit out of the scope for #email-routing, and would suggest we continue e.g. in #off-topic.

DarkDeviL•2/17/24, 10:28 PM

The only option to avoid that "huge waste" would be to disturb the sender, and have them stop trying to email you.

DarkDeviL•2/18/24, 12:27 AM

Have no issues trusting you on that, but it's the only way if you want to avoid processing / seeing it (including, e.g. from the Email Routing summary)

KNOX•2/18/24, 2:44 AM

How do i set up a worker so that when a specific email address receives an email it gets sent to my server via an http post request?

KKNOX How do i set up a worker so that when a specific email address receives an email...

DarkDeviL•2/18/24, 4:57 AM

You can send the data you're looking for to your HTTP server using fetch.

Here is one example, which is sending a POST with some data to a Discord Webhook: https://github.com/Tyler-OBrien/cloudflare-worker-emails-to-discord

Nick Reshatoff•2/19/24, 9:39 PM

hi all. hoping someone can help me. I just signed up to create custom domain on my iphone through settings > icloud and it let me setup the domain and transfered me to cloudflare for payment. That is all done now and i am in my cloudflare trying to set up the DNS records. i followed the instructions Apple sent me but the fields do not match to whay i see in the DNS section of cloudflare and i need some help. I tried reaching out to Appe for help and they said i need to contact Cloudflare. I am trying to set up the new domain with Apple icloud mail. Sorry and thank you for the help in advance

NNick Reshatoff hi all. hoping someone can help me. I just signed up to create custom domain on ...

Hello, I’m Allie!•2/19/24, 9:46 PM

What is it asking you to do, specifically?

ohm, sometimes MailChannel just doesn't send any email 😳

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