Dns Resolver Error Lotus Domino

server; DNS; domain name system; MX records; nslookup; outbound smtp; network; router; mail; messaging; troubleshoot; troubleshoot:A records Technote (troubleshooting) Problem Unable to route outbound SMTP mail relating to Domino and DNS. Symptom - Messages back up in the mail.box. - The router task displays the error message 'Waiting for DNS availability'. - The server attempts to connect to an internet domain rather than the mail exchanger. Resolving the problem It is suggested to work with your network administrator to help resolve these types of issues. I. Understanding how Domino handles external Internet domains. II. Troubleshooting using debug parameters. III. Troubleshooting manually. IV. Troubleshooting the network. V. Related technotes. Phase I. Understanding how Domino handles external Internet domains. The Domain Name System (DNS) and SMTP mail routing The Domain Name System (DNS) is a directory used by SMTP to convert a name, such as acme.com, to a list of servers that can receive connections for that name and to find the IP address of a specific server. By looking up a destination server's address in the DNS, the sending server can properly route a message to a recipient. DNS uses two kinds of records: Mail Exchanger (MX) records and A records. An MX record maps a domain name to the names of one or more mail hosts. An A record maps a host name to the IP address of a server. You must correctly configure DNS to support your use of SMTP. To determine the IP address of the mail server for the destination domain, Lotus Domino does the following: 1. The server looks up the domain part of each recipient's address in DNS. 2. If DNS finds an MX record, the server tries to connect to the server listed in that MX record. If there is more than one MX record, the server tries to connect to the record that has the lowest cost. If more than one MX record has the lowest cost, the server randomly selects one and tries to connect to the server listed in that MX record. Note: There may be more than one MX record for a specific domain name. The host name is looked up in DNS to find an A record. An A record contains the IP address for the host. 3. If DNS finds only an A record, Domino routes the message to the IP address in that A record. 4. If DNS does not find a record, Domino cannot deliver the message and send

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Display Modes DNS lookups are A Records instead of MX Tirenque Guest Posts: n/a 05-16-2006 Hello, First of all I am a http://www.lotusnotesforums.com/dns-lookups-records-instead-mx-t3087.html complete newbie to Domino so please bear with me. Here is the setup: http://domino382.rssing.com/chan-24762189/all_p199.html Domino 6.5.5 on Win2003. Lone server. Incoming mail is fine. I recieve mail from the Internet with no problems. Outgoing mail is not working. I did a packet trace on the server and noticed that when I send a mail the Domino server performs an A Record query in DNS instead of a dns resolver MX record lookup. DNS being a good sport does its job and hands over an IP (of a host). The trace continues with the Domino server sending syn packets to destination port 25 and then we get timeouts and messages like: "Failed to connect to SMTP host Yahoo.com because the server is not responding" Any ideas what is going on? Thanks for your help, Tina dns resolver error Caliban Guest Posts: n/a 05-16-2006 "Tirenque" <(E-Mail Removed)> wrote: >Hello, > >First of all I am a complete newbie to Domino so please bear with me. > >Here is the setup: > >Domino 6.5.5 on Win2003. Lone server. > >Incoming mail is fine. I recieve mail from the Internet with no >problems. > >Outgoing mail is not working. I did a packet trace on the server and >noticed that when I send a mail the Domino server performs an A Record >query in DNS instead of a MX record lookup. DNS being a good sport does >its job and hands over an IP (of a host). The trace continues with the >Domino server sending syn packets to destination port 25 and then we >get timeouts and messages like: > >"Failed to connect to SMTP host Yahoo.com because the server is not >responding" > >Any ideas what is going on? > Have you checked the IP address against the nslookup results? For yahoo.com I got... Non-authoritative answer: yahoo.com MX preference = 5, mail exchanger = mx4.mail yahoo.com MX preference = 1, mail exchanger = mx1.mail yahoo.com MX preference = 1, mail exchanger

Claim or contact us about this channel Embed this content in your HTML Search confirm cancel Report adult content: click to rate: Account: (login) More Channels Showcase RSS Channel Showcase 8977779 RSS Channel Showcase 4526631 RSS Channel Showcase 1268090 RSS Channel Showcase 2817213 Channel Catalog Subsection Catalog Articles on this Page (showing articles 3961 to 3980 of 7731) 03/22/15--12:45: _here is the text fr... 03/22/15--13:52: _mail routing 03/22/15--16:20: _Router: DNS Resolve... 03/23/15--03:57: _Notes 9.0.1 Fixpack... 03/23/15--05:14: _Fixed yet 03/23/15--05:20: _Make sure you have ... 03/23/15--05:46: _Currently being eva... 03/23/15--06:15: _This looks similar ... 03/23/15--08:23: _Notes signature cha... 03/23/15--08:32: _Sounds like your si... 03/23/15--08:55: _CTL+F9 03/23/15--09:23: _How about Ctrl F 03/23/15--09:34: _Notes signature cha... 03/23/15--09:34: _Notes signature cha... 03/23/15--10:03: _Resolved the DNS Re... 03/23/15--11:29: _My bad...It was CTL... 03/23/15--18:46: _Do you have access ... 03/24/15--04:25: _Creating a document... 03/24/15--09:14: _PTR records 03/24/15--11:26: _Perhaps (showing articles 3961 to 3980 of 7731) Browse the Latest Snapshot Browsing All Articles (7731 Articles) Live Browser Channel Description: All new posts, including main topics and replies, to the IBM Notes and Domino 9.0 Social Edition Forum. older | 1 | .... | 196 | 197 | 198 | (Page 199) | 200 | 201 | 202 | .... | 387 | newer 0 0 03/22/15--12:45: here is the text from the link Contact us about this article I think what you are looking for is 2 things: 1. the onChange event for the first checkbox (listbox)Field 2. the 'Run Exitin 0 0 03/22/15--13:52: mail routing Contact us about this article So for each client that runs the Acronis backup, they hane to have a PTR record in DNS? The Acronis software is a standalone 0 0 03/22/15--16:20: Router: DNS Resolver failed to initialize.: DNS resolver error Contact us about this article I'm having trouble with a server that has been working for a long time and started to have problems. I did some changes to i 0 0 03/23/15--03:57: Notes 9.0.1 Fixpack 2 Crash Contact us about this article Hello All, without any apparent reason Notes 9 Crash during the mail send phase. This problem is note reproducible as well, 0 0 03/23/15--05:14: Fixed yet Contact us about