Email Looping Error
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automatic response triggers another automatic response on the other side, an email loop is created. The process can continue until one
Email Error Message Examples
mailbox is full or reaches its mail sending limit. In theory, email error message prank the email loop could last indefinitely. Email loops may be caused accidentally or maliciously, causing denial of 554 5.7.1 relay access denied service. Although rare, email loops involving more than two participants can also occur. Email loops are not as common today as in the past, due to changes to
Relay Access Denied Smtp
email software, both on the client side and the server side, that prevent automatic replies to vacation responses and bounced mail responses.[citation needed] Contents 1 Costs of an email loop 2 Causes 3 Prevention 4 References 5 External links Costs of an email loop[edit] Bandwidth: Email loops use up limited bandwidth over networks. Processing time: Email loops
Relay Access Denied Postfix
will take up processing time, and could slow down other processes. Disk space: Automatic emails are usually stored in the mailboxes of participants. Human Time: Network administrators may have to intervene to fix the problem, or clean up mailboxes. Also the mailbox user/owner will have to delete the numerous responses in order to clean up the mailbox. Causes[edit] Autoresponders, such as automatic "on vacation" replies Email bounces due to, for example, exceeding the inbox disk quota Replies to indicate that that mail has been delivered Replies to email read-receipts Misconfigured email servers that try to deliver messages to systems that pass the message along to another host, with a loop leading in a circle. (Modern mail systems will detect mail forwarded back and forth between two hosts, but a routing loop involving three hosts is much harder to detect.) Prevention[edit] The mail system should retain headers of incoming email while performing any type of auto-forwarding operation. Auto Responder: Do not send more than 'x' replies to the
delivery issues for error code 5.4.6 through 5.4.20 in Office 365 Applies To: Office 365 Admin, Less Applies To: Office 365 Admin , More... Which version do I have? More... Here’s what to do if you get delivery recipient address rejected access denied office 365 status notification (DSN) error code 5.4.6 or Exchange NDR 5.4.6 through 5.4.20 in a
550 5.7.1 Relay Access Denied
non-delivery report (NDR). There can be several causes for dsn error code 5.4.6, but this might happen if the message 554 relay access denied hop count is exceeded or the route through which the message gets delivered is broken. Some causes and solutions for hop count being exceeded are provided later in this topic. The information here applies https://en.wikipedia.org/wiki/Email_loop to a range of error codes 5.4.6 through 5.4.20. Finding information about Exchange NDR 5.4.x that will help you solve the problem Use the information in the Exchange NDR to decide how to fix the problem. Tips for fixing the problem that is causing Exchange NDR 5.4.6 Here are some procedures that you can try that may allow you to resend the message successfully. Message delivery from server-to-server can https://support.office.com/en-us/article/Fix-email-delivery-issues-for-error-code-5-4-6-through-5-4-20-in-Office-365-81212ae4-4c36-4e8f-9546-e58b70cfd74b be complicated or require special access to settings, so most of these steps are designed for an Office 365 email administrator and not the average email sender. If the steps here don’t help, contact your email administrator and refer them to this information so they can try to resolve the issue for you. Accepted domain issues Verify that the recipient's domain is configured as an authoritative accepted domain in Exchange Online. For more information, see Manage Accepted Domains in Exchange Online. Hybrid configuration issues If your domain is part of a hybrid deployment between Exchange and Exchange Online, check the following items based on your configuration: You route all incoming mail for your hybrid domain through Exchange Online. This error can happen when the MX record for your hybrid domain points to Exchange Online, and the Outbound connector that's used to route mail to your on-premises Exchange organization is configured to use DNS routing. To fix the problem, configure a dedicated Outbound connector that uses smart host routing and that has your on-premises hybrid server configured as a smart host. The easiest way to fix the problem is to re-run the Hybrid Configuration Wizard in the on-premises Exchange organization. Or, you can ve
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Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Server Fault Questions Tags Users Badges Unanswered Ask Question _ Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top mail loops back to myself | postfix up vote 5 down vote favorite Hi I have an issue with bounced mail it does not happen all the time but at the same time is very frequent. Most of the time if I send an email to an address that does not exist then i get a bounce back into failues@domain however there seem to be instances when I get this error below Sep 30 13:38:53 postfix/smtp[62566]: DB8E6D6F9EA: to=, relay=none, delay=0, delays=0/0/0/0, dsn=5.4.6, status=bounced (mail for domain loops back to myself) I seem to get this when I get an immediate bounce i.e the server im trying to connect to immediately blocks the email because it nows that the address does not exist. If the email goes out and is returned later this seems to work fine. Does anyone have any ideas why I would get this "mail for domain loops back to myself" error message. Obviously it is me trying to send the email back to myself as my server received a block when trying to send a mail then it tries to send the mail back to the ReplyTo header which in this case is itself but shouldn't it be able to handle this? ........ NOTE: ive had to remove any '.com' from this post as I can only post 1 url Thanks for the 2 answers already however we are still having the same issue. so below I'm trying to provide some more detailed information. Both the examples below try to send to a non-existent address. RealTSP bounce fro