vbs).Ĭheck Cloudmark Sender Intelligence (CSI) to see the current reputation of the sending IP Address. Sender attached something a file format that our server does not allow (.bat. If the message was flagged erroneously, save a copy of the original email and report it to us. Check the sending lists to ensure correct recipients. Put an option to opt-out in your email messages. SMTP 552 (virus-infected message rejected)Ĭloudmark detected the message as having a virus. Removed the URL from the body of the email and sent it again. SMTP 552 (Remote MTA $ip: A URL contained in this message is blacklisted by Spamhaus DBL. Verify if the sending IP Address has reverse DNS Setup before resending an email. SMTP Temporary rejection - Couldn't identify the PTR record. Remove the invalid email address from the email.Ĭontent-Related Bounceback Message (Incoming) Your email address could have been blacklisted by accident. Try to contact the receiver by other means. The sender is blacklisted at the user level (the customer blacklisted them). SMTP 550 ('toemail' recipient rejected GL/BL) Retry sending the email as the account is using greylisting.Įmail address isn't properly formatted (has no sure you entered the correct email address. The account is using greylisting and will be accepted when the delivery is retried. SMTP 452 ('toemail' requested action aborted: try again later - GL/GL) Receiver Account-Related Bounceback Message (Incoming) SMTP 550 ('fromemail' max messages per session) Temporary fail because our mail queue is too full.

SMTP 421 (Server Temporarily Not Available) Quota/Limit Related Bounceback Message (Incoming) Below is a list of potential bounceback errors and their meanings. You can check bouncebacks received through Splunk. Blacklisted, Blocked, or Rejected Messages.This article will provide you with a list of common bounceback errors and how to fix them. Knowing how to decode bounceback messages will be necessary to guide the customer to the correct resolution. The bounceback error typically gives us some insight into whatever is causing the problem. A bounceback is generated when there is an issue with the sending or receiving mail server. Occasionally, we may receive reports from our customers that they've gotten a bounceback when sending an email.

Email bounce back message example