Email Error 4.4.2
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Follow 43 Mentions12 Products Neal (Exclaimer) Sales & Marketing Manager GROUP SPONSORED BY EXCLAIMER TECHNOLOGY IN THIS DISCUSSION Microsoft Exchange Server 2010 Join the Community! Creating your account only takes a few minutes. Join Now We switched ISP's, obtained our own IP address and now host our own DNS. I copied everything from old DNS provider to the new. Everything seems to be working correctly now except a few domains won't accept our email and we get 421 4.4.2 connection dropped error. Please help. I have checked many times and we are not on any blacklist that I can tell. Reply Subscribe RELATED TOPICS: 421 4.4.2 Connection dropped due to ConnectionAborted 421 4.4.2 Connection dropped Exchange 2007 Connection dropped due to connection reset - Only a few emails   19 Replies https://support.microsoft.com/en-us/kb/284204 Ghost Chili OP tfl Jun 5, 2014 at 12:39 UTC You should first contact one of the domains that are refusing your connections. This should not happen, unless you somehow have your domain misconfigured. You don;t say which domains are affected, so I can't help much, but two things you may have wrong: 1. You do not have SPF installed, or configured correctly. I would do a network trace of your mail server forwarding a mail and see what messages are generated. There may may https://community.spiceworks.com/topic/510160-only-a-few-domains-give-421-4-4-2-connection-dropped-error-but-not-blacklisted be more information or extra packets that will give you a clue. 2. Are you by any chance publishing any dns servers with internal ip addresses? 1 Sonora OP Struble9401 Jun 5, 2014 at 1:49 UTC Thanks for your quick response! I have entered an SPF record, although it is actually a TXT record (not sure if that could cause it) because I didn't see an option in the GUI for SPF. I used a Microsoft online wizard to create the SPF but not sure if I got it right. The domain affected is wccc.edu. We use EOP but are only using currently for inbound filtering and not outbound yet. I just double checked and am not publishing any internal IP's that I can see. 0 Ghost Chili OP tfl Jun 5, 2014 at 2:00 UTC Thanks for coming back. Those were the only two issues I've seen recently - but glad you are not plagued by them. As for the SPF record, you are right, this is a TXT resource record in DNS. If you used the wizard it SHOULD be right, but if it's really badly or even partly wrong, you'd see lots of errors not just one. As to why WCCC.EDU is rejecting your posts, I suggest you contact them - they may be able to see more in their logs. Also, look at the Exchange SMTP logs to see if there is any more additional information in the logs. 1 Ghost C
delivery issues for error code 4.4.7 in Office 365 Applies To: Outlook 2016, Outlook 2013, Office 365 Admin, Outlook 2010, Outlook 2007, Less Applies To: Outlook 2016 , Outlook 2013 , Office 365 Admin , Outlook 2010 , Outlook 2007 , More... Which version https://support.office.com/en-us/article/Fix-email-delivery-issues-for-error-code-4-4-7-in-Office-365-2fda59a8-84f8-4eb0-96e1-49187fbe7ff9 do I have? More... This topic can help you fix email problems that are associated https://portal.smartertools.com/community/a86453/aol-email-users-can-not-send-email-to-smartermail_-get-error-4_4_2-connection-dropped_.aspx with error code 550 4.4.7 if you see this in a non-delivery report (NDR). Mail flow problems can be frustrating, but we have solutions you can try in order to get your message sent. There can be several causes for dsn error code 4.4.7, so use the information in the NDR to decide how to fix the problem. For email error more details about the causes, see Causes for 4.4.7, later in this topic. I sent a message, what can I do to fix this? I'm the Admin, what can I do to fix this? Why did I get a non-delivery report? I sent a message and got error code 4.4.7 in an NDR. What can I do to fix this? Here are some procedures that you can try that might allow you to resend email error 4.4.2 the message successfully. Message delivery from server-to-server can 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. Problems in the destination domain If you get DSN error code 4.4.7 and have problems sending email to recipients in one domain only, the problem is likely with that destination domain. A domain is similar to an organization name or the name of an email provider and in an email address it shows up on the right-hand side of the at symbol (@). For example, in Harumi@contoso.com contoso.com is the domain name. Learn more about domains at What are domain names? Possible causes for domain issues include: Temporary network or Internet connection issues in the destination domain. Aggressive anti-spam settings in the destination domain that block legitimate senders, for example, all senders from any domain in Exchange Online. If you suspect the problem is with the destination domain, let the administrators of that domain know. You need to provide the following information, which is all contained in the NDR: The name of the mail server in the destination domain,
2015 at 8:15 AM Resolved Select a category for your thread. SmarterTrack SmarterMail SmarterStats General Discussion Product Tools and Utilities Hit ENTER after each Tag to add it to your post; Numbers in parentheses represent the Tag's usage. About 10 days ago AOL users sending email to our clients on our SmarterMail Server v11 began getting non-deliverable notices with error 4.4.2. See error message: -------------------------- Action: failed Status: 4.4.2 Diagnostic-Code: X-Outbound-Mail-Relay; lost connection with mail.lobstertrap.com[66.151.230.30] while receiving the initial server greeting ------------------------------------------------------- I have run tests from third party web sites such as mxtoolbox, TLS Receiver, pingdom, network-tools and others and no problems are reported. The mail server is also not being reported on any black lists. Of course our clients are angry because these AOL users are customers trying to email them orders and they are not being delivered. As far we can tell, no other senders are having trouble, with the exception of some intermittent reports from hotmail users getting delivery errors. The only changes we have done recently were to update our certificates and enable TLS across all domains. But that was a month ago. I have opened three support tickets with AOL but so far no replies. Has anyone had experience with this error code 4.4.2, AOL non delivery to Smartermail or timing out? Help, please × Report Abuse Offensive LanguageWrong CategorySpam Cancel Send Report First of all a 4.x SMTP response code should not result in a bounce. Secondly, AOL is a mess and I wouldn't believe anything they said. I know a guy that used to work there until recently and he says there's nobody left to fix problems on their end. Their system is automated and when it breaks it takes weeks for the few techs left to fix the problem. Additionally I'll say that ANYONE that uses an AOL email address should expect problems. Joe Wolf June 17, 2015 at 3:44 PM Edit Delete 13 Replies Reply to Thread 0 Bruce Barnes RepliedJune 17, 2015 at 7:22 PM Mark As AnswerMarked As Answer We have several clients with personal AOL addresses which they have been using for more than 15 years, and many of them are beginning to complain about AOL's degeneration into a worthless company. We are now telling our customers that we can no longer guarantee delivery to any AOL hosted account. Bruce BarnesChicagoNetTech IncPhone: (224) 444-0169E-Mail and DNS Security SpecialistNetwork Security SpecialistCustomer Service Portal: https://portal.chicagonettech.comWebsite: http