Question Plesk / msmtp – SMTP 501 error when sending system emails via IONOS

[sauerleander]

I’m having an issue with outgoing system emails on a Plesk server using msmtp.



Emails are sent via a subdomain, using IONOS SE as the SMTP provider (smtp.ionos.de:465).



The following error occurs:

host = smtp.ionos.de:465
tls = on
auth = on
user = [email protected]
from = [email protected]
recipients = root
smtpstatus = 501
smtpmsg = "501 Syntax error in parameters or arguments"
errormsg = "recipient address root not accepted by the server"
exitcode = EX_DATAERR

It appears that the SMTP server rejects the recipient address root, while authentication itself succeeds.



Has anyone experienced this with Plesk system mail or msmtp when using IONOS SMTP?

What would be the recommended way to handle system recipients in this setup?

 

[Sebahat.hadzhi]

Hi, @sauerleander . Could you please navigate to Plesk > Profile & Presence. Make sure that administrator e-mail address is specified in Email Address field and press Apply.

 

[sauerleander]

Hi, @sauerleander . Could you please navigate to Plesk > Profile & Presence. Make sure that administrator e-mail address is specified in Email Address field and press Apply.

Which e-mail address should be entered there I would have the question what is the difference between adopting and applying

So I have to change the data in my profile? E.g. in Adrian this only administrator?

@Sebahat.hadzhi

 

[Sebahat.hadzhi]

The value you enter there should be an administrator email. The same will be used as an alias for the notification that are sent to "root@localhost," and that should potentially solve the issue you reported.