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The error code that is returned in the bounce should also be Sent message was either delayed or could not be delivered along withĪn SMTP error code that the remote server generated during the SMTP Or rejection. The causes for these are varied but normallyĪ bounce message will be generated indicating that the Such as Hotmail, Yahoo, Gmail, AOL, etc. is due to a temporary delay The most common reason for mail not being accepted by servers ForĮxample, Gmail may display a question mark for the senders avatar. Mark your email as junk or indicate that the sender is not authenticated.
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May temporarily delay or reject your inbound message. To large email providers such as Hotmail,, Yahoo and Gmail that This article provides troubleshooting information for sending Unable to send email to some domains, such as Hotmail, Yahoo, Gmail etc.
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