|Document ID: ||4667|
|Subject: ||Why are messages sitting in out-bound mail queue|
|Creation date: ||12/14/15 4:35 PM|
|Last modified on: ||11/30/21 9:41 AM|
Outbound mail queue
$INSTALL_DIR\OutboundMailQueue folder is used to store messages that cannot be sent to the final destination in the first attempt. There are several reasons for messages to stay here. Messages that fail to be delivered in the first attempt are saved in this queue. Therefore, if a message is delivered right away, it won't appear in this folder.
Consider the following reasons for a message to stay here.
- MX record(s) for the destination server cannot be resolved. If you are using Xeams in Hybrid or Firewall mode and a destined for a local domain is found in this queue, ensure you have added the domain in the local host file. (Server Configuration -> Manage Host Files).
- Outbound port 25 is NOT blocked. Often, users run Xeams on a dynamic IP address, and their ISP blocks the traffic for outbound port 25. SMTP communication on the Internet always occurs on TCP/IP port 25 and if this port is blocked, messages will sit in the OutboundMailQueue folder forever.
- The receiving server is either down or is not accepting messages temporarily. In this case, the message will get delivered automatically.
By default, Xeams flushes its outbound queue every 30 minutes. Follow the steps below to change this default behavior.
- Login as admin
- Click Server Configuration
- Modify the values for Retry Interval and Retry Count under the Advanced tab. The product of
Retry Interval and Retry Count represents the number of minutes an email will stay in the queue.
For example, if Retry Interval is set to 10 and Retry Count set to 432, Xeams will attempt to
deliver a message again after 10 minutes and will do that 432 times, which equates to 4,320 minutes or 72 hours.
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