Hello team!

We configured tool/email settings in many routers with the same gmail free account.
I can send test emails in all but one, exatly the same settings in all Mikrotiks
The error is the same that in the title of this post.

Here the settings: There is not any output rule on this mikrotik, so this is not related to filter rules
The Mikrotik with this error has an old routerboard (6.34.2) and very old firmware (3.24). I know I have to update this. Do you think this is related to the versions?
I get answer from pings (mikrotik to smtp.gmail.com)

Any idea?

Thanks in advance.
Regards,
Damián

Hello team!!

Thanks for your answers
@BartoszP, when I look for "gmail+problem", I cant get anyone with my problem
I just found one old topic which was not solved
@holvoetn, This is not the issue, the same account with the same settings is working in other 5 mikrotiks

Anyone?
Regards,
Damián

Thanks for your answer holvoetn,

I believe you, I needed to add an app password to make it work in other routers.
If I don't add an app password, the account won't work in any other Mikrotik, but I repeat: the same account with the same settings is working in another Mikrotiks.

Thanks in advance
Regards,
Damián

Sorry, I didnt clarify this because I thought that with other Mikrotiks working with the same settings were enough to know that the app password has been created. If I dont create an app password, the account will not work in any Mikrotik.
Anyway, my fault.
About using another account password, I did not try this yet, but I used another account in more Mikrotiks with the same app password, I dont think another app password will work.
I have something more to clarify, the Mikrotik with the problem is behind a Shopping firewall, maybe this firewall is blocking this, but get an answer from the shopping support will take long time :p
In the logs, the only line I get is exactly what the title of this post say.

Regards.
Damián

Yes, update the firmware. As said before, Google has tightened up the security requirement for G-Mail. Likely the really old ROS version can't handle the new requirements. I have had a number of various devices (not Mikrotik) that have required updates to handle the newer requirements.

Thanks for your answer k6ccc,
I will try!

Regards,
Damián

yes.
Sad though, if you would've waited on more month, you could've send that routerboard to school as it turns 7 years.
What's new in 6.34.2 (2016-Feb-18 06:31):
The owner should be shot.