Describe the issue/error/question I’d like to test out this new User Management feature and be able to invite users for collaboration. The current way of using this feature involves sending out invitation emails by the owner, as far as I can tell. The thing is I have my own self hosted SMTP server…

Hey Jon, It’s Microsoft Exchange on-prem. Confirmed its using port 25 with TLS/SSL set to false. Si

Hi @simon.lewis , I don’t suppose the exchange server has StartTLS enabled does it?

Hi Jon, Apparently not, no, but I suspect it does not matter as the SMTP communication is actually with an IIS server (does not actually touch Exchange). That is, it gets more complex as we actually use an IIS SMTP relay internally and that is what is configured for n8n to use. No TLS at all on tha…

Hey @simon.lewis , That has got more complex :smile: Out of interest when n8n says it can’t send the email what does the relay log? That could provide more of a hint on this one.

Good question ! … will see if I can find out. Meanwhile, is there a way to ‘invite’ someone to the system and bypass the verification email thing ? I guess I just need to copy / construct whatever verification link gets sent out in the email ? Thanks Si

Hey @simon.lewis , So what you could do is manually build out the sign up URL, It will be something like… /signup?inviterId=ID_OF_INVITING_USER&inviteeId=ID_OF_INVITED_USER From the database you can find both of these values as ID under the user table, It isn’t pretty but it would get you started. …

Thanks Jon - that worked ! Will update if I can get the SMTP logs …

Hi @Jon , Example of a request logged at the SMTP relay … Si 2022-04-19 03:33:49 163.7.22.59 [127.0.0.1] SMTPSVC1 V-ROT-aaa 163.7.18.150 0 EHLO - +[127.0.0.1] 250 0 217 16 0 SMTP - - - - 2022-04-19 03:33:49 163.7.22.59 [127.0.0.1] SMTPSVC1 V-ROT-aaa 163.7.18.150 0 STARTTLS - - 220 0 0 8 0 SMTP - …

Hey @simon.lewis , That looks like it might have worked, I assume the 52877xxxxx is a message ID, That also shows the starttls command so it is enabled but it looks like it got past that :thinking: Is there a debug option that can be enabled to get the full handshake?

Hi @MutedJam and thank you for the answer. [image] MutedJam: Is your SMTP relay possibly listening for unencrypted traffic on port 25 instead? It is, but I believe I have configured my n8n instance accordingly, to actually use port 25. Here is a excerpt from my docker-compose.yaml, from the…

[User Management] How to invite users with SSL-less/unauthenticated SMTP server?

Questions

Menna June 19, 2022, 9:26am 24

For me this was the fix: Cannot get mails via IMAP - #5 by MutedJam
I did not know beside disabling SSL/TLS in config window I had to do this!

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[User Management] How to invite users with SSL-less/unauthenticated SMTP server?

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