I've setup a new gmail account me.company@gmail.com in order to use the gmail client to manage email from another account, me@company.com.br.
I'm receiving all e-mail that's sent to me@company.com.br in my me.company@gmail.com mailbox. Great.
However, I'm not able to "send mail as" me@company.com.br when using the me.company@gmail.com account. I added the me@company.com.br in the "send mail as" options, configured it like my colleagues here at the company (SMTP server, port 587, TLS), and I got the message that an e-mail had been sent to me@company.com.br. I tried resending the e-mail confirmation a zillion times using various different settings, but I never get that e-mail at the me@company.com.br mailbox.
Here is a screeshot of the "Save Mail As" settings:
After struggling for a while I noticed the following message in the me.company@gmail.com Spam box:
Delivery to the following recipient failed permanently:
me@company.com.br
Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the server for the recipient domain company.com.br by company.com.br. [67.23.245.70].
The error that the other server returned was:
550-Verification failed for <send-as-noreply@google.com>
550-Previous (cached) callout verification failure
550 Sender verify failed
----- Message suppressed -----
What exactly is going on there? I'm having a hard time interpreting this error message.
ps: I replaced my username with 'me' and the company name with 'company'.
Best Answer
You should talk with the email administrator of "mail.company.com.br" and ask him to change the settings of the email service in order to allow the email verification be realized.