@pitaj said in Email suddenly no longer works with SMTP Relay Google Workspace:
@emotion a restart of your forum would eliminate the issue, so it's highly unlikely that issue is causing this.
As you said you'd likely see a different error if it was falling back to sendmail.
The Flarum forum also has 0 active users, but again with the exact same SMTP relay settings it sends emails just fine.
I don't know and this is extremely frustrating. I wish I could help but you might need to ask people with more expertise, try Stack Overflow or the Nodemailer GitHub issues. I'll see if I can write up a minimal reproduction example for you to try (removing NodeBB from the picture) so you can post there.
Thanks, that's a good idea, I might do that.
@gotwf said in Email suddenly no longer works with SMTP Relay Google Workspace:
might try pinging @scottalanmiller. i am recouperating from hand surgery & a bit challenged at present.
maybe try test goog's smtp relays manually from cli, e.g.:
Edit: in case not clear, I meant to test from cli on the respective server. If that all works, then you've isolated to nodebb, no? which may well already be the case but still nice to have confirmation and the real time responses from gsmtp server might proof informative. good luck o/
Well, Flarum works fine with it. Still, I tested to see if telnet would connect with it and it does:
$ telnet smtp-relay.gmail.com 587
Trying 2607:f8b0:400d:c03::1c...
Connected to smtp-relay.gmail.com.
Escape character is '^]'.
220 smtp-relay.gmail.com ESMTP v24sm193634pjt.16 - gsmtp
@theopenem said in Email suddenly no longer works with SMTP Relay Google Workspace:
I had the same thing happen. Emails have been working fine when using the gmail smtp server for months. Then a few days ago it stopped working with the same error as mentioned above. I have a wordpress site on the same server as nodebb with the same relay settings and it continues to work fine. It also works fine when using telnet from that same server. NodeBB is the only thing that seems to be effected. I solved the problem by disabling "Use an external email server to send emails" and just letting postfix relay the mail for me. Just thought I'd share.
How are you connecting WordPress to smtp-relay.gmail.com? Are you using a plugin?
The problem with letting postfix relay the mail is that it lacks DKIM, DMARC, and SPF records which makes your emails more likely to end up in the spam folder. Also, if you have multiple sites running on the same server then postfix mails every email from the primary domain, usually in /etc/mailname, which essentially spoofs emails and again makes it more likely to end up in spam.
In any case, I contacted Google Workspace support on Friday and chatted with them for over 2 hours about this issue. They couldn't figure it out and kept insisting it was a denial of service issue, but they didn't make it clear if it was on my end or theirs.
They sent me an email today:
After consulting your case related to the SMTP relay issue and also verifying similar cases, it appears that the issue is highly related to the Denial of Service as we discussed during our chat interaction, probably, the system detected a massive email delivery from the previous set up causing this error to appear.
As suggested, it will be necessary to declare your domain at the HELO command, from the tool that you are using adding your domain name so our system will be able to complete the authentication, it is strongly recommended to contact the app developer or their community forum to see if there's another way for you to add this command.
In case is needed, you can visit the following Help Center article for more information about setting the SMTP relay, it will come in handy https://support.google.com/a/answer/2956491
It was a pleasure to assist you. I'll keep this case open for the next three business days so you can let me know if additional assistance is needed. Once the case closes, you can reply in the next 30 days to reopen it. Have a nice day!
Is this currently possible with nodeBB?
