Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Troubleshooting Mail Delivery<br />
Troubleshooting Mail Delivery<br />
When experiencing mail delivery problems, the first step is to examine if the problem is affecting<br />
only incoming mail, outgoing, or both. For example, if you are receiving mail, but not sending<br />
outgoing mail, it is certain that your Internet connection is working properly, or you would not be<br />
receiving mail. In this scenario, you may have issues with the Firewall blocking your outbound<br />
SMTP connections, or some other problem preventing mail delivery.<br />
Problems affecting both inbound and outbound delivery include the following scenarios:<br />
• Network infrastructure and Communications — The most common scenario in which you<br />
are not receiving or sending mail is if your Internet connection is down. This can include<br />
upstream communications with your ISP, your connection to the Internet, or your external<br />
router. You should also check your internal network infrastructure to ensure you can contact<br />
<strong>ePrism</strong> from your router or firewall.<br />
• DNS — If your DNS is not working or configured properly, mail will not be forwarded to your<br />
<strong>ePrism</strong> or you will not be able to lookup external mail sites. Check the DNS service itself to see<br />
if it is running, and check your DNS records for any misconfiguration for your mail services.<br />
Ensure that your MX records are setup properly to indicate the <strong>ePrism</strong> system.<br />
• Firewall — If you are having issues with your Firewall or if it is misconfigured, it may<br />
inadvertently block mail access to and from <strong>ePrism</strong>. For example, SMTP port 25 must be<br />
opened between the Internet and <strong>ePrism</strong> and internally to allow inbound and outbound mail<br />
connections.<br />
• Internal Mail Systems — You may be receiving incoming mail to the <strong>ePrism</strong>, but mail is not<br />
being forwarded to the appropriate internal mail servers. Also, outgoing mail from the internal<br />
servers may not be forwarded to <strong>ePrism</strong> for delivery. In these scenarios, examine your internal<br />
mail server to ensure it is working properly. Check communications between the two systems to<br />
ensure there are no network, DNS, or routing issues. Also check that your internal servers are<br />
configured to send outgoing mail to <strong>ePrism</strong>.<br />
• External Mail Systems — If you have a large amount of mail to a particular destination, and<br />
that mail server is currently down, these messages will queue up in the deferred mail queue to be<br />
retried after a period of time. You can view the Mail Transport logs to see the relevant messages<br />
that may indicate why you cannot connect to that particular mail server. The server could be<br />
down, too busy, or not currently accepting connections.<br />
252
Change language