Verification failed forwarding mail to Gmail


Mar 22, 2017
cPanel Access Level
Website Owner
Hi guys,

I have a problem with the mail server. I configured the mail server so it forwards the e-mails to Gmail. It works 99% of the time but I see that some of the e-mails get this error, even tho I have previously received e-mails form that address. I guess the error appears when my server tries to forward it to Gmail, because I can see the e-mail in RoundCube for example. I have tried setting MX to remote mail but I couldn't receive any e-mails ( i got a too many headers error), so I switched it back to Local. Error message:

ECDHERSAAES256GCMSHA384:256 CV=no: SMTP error from remote mail server
after MAIL FROM:<[email protected]> SIZE=246124: 550Verification failed for
<[email protected]>\n550Called:\n550Sent: RCPT TO:
<[email protected]

One of the users sent me 2 successful e-mails, than five got this problem, and I received the 7 one, and now it seems it works for that particular address. I don't know what to make of that.

Any help would be much appreciated.


Staff member
Apr 11, 2011

Could you enable the "Enable Sender Rewriting Scheme (SRS) Support" option in "WHM >> Service Configuration >> Exim Configuration Manager >> Basic Editor" and let us know if this helps to address the issue?

This option rewrites sender addresses so that the email appears to come from the forwarding mail server. This allows forwarded email to pass an SPF check on the receiving server.

Thank you.