Cannot send emails to recipients with a number in the address

[jacao]

Hi there,

I've found with latest verion of Espo I cannot send emails to recipients with the number in the e-mail address e.g: john3@whatever.com or john3doe@whatever.com

Sending email returns red error on the top of the screen:

Email sending failed: Unknown error.

and emails goes to the Draft folder.

I've tested it on several envinronments Espo with different e-mails:

Error is on Espo 8.1.3, 8.1.5. With Espo 8.0.3 everything is all right.


Does enyone have the same error?

Regards, Jacek

[lazovic]

Hi jacao,

Unfortunately, I can't reproduce your issue.

Please send error logs of your instance for detailed analysis (located in {ESPO_ROOT}/data/logs/ directory).

[jacao]

Thank you for the reply.

With the logs I've found:

[2024-03-05 10:40:36] ERROR: Email sending error: 5.1.1 <john3doe@whatever.com>: Recipient address rejected: User unknown in virtual mailbox table
[2024-03-05 10:40:36] ERROR: Email sending:unknownError; 0

Then I've realized that my SMTP test account is on the same server than e-mail recipient mailbox. The e-mail address with the numer I used was fake. I've expected Undelivered Mail Returned to Sender but server blocked sending this e-mail. So it's not a bug but feature

Regards! Jacek