Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it’s on-topic for Server Fault. Closed 2 years ago. Improve this question I don’t want to talk around the bush for long. I disagree with a friend how a router would behave in a special … Read more
The Question: Client asks for: Range:bytes=0- Server responds with: Content-Length:8396748 Content-Range:bytes 0-8396747/8396748 I want to limit that Content-Range to 1MB chunks so the server would respond like this: Content-Length:1000000 Content-Range:bytes 0-999999/8396748 How can I make Apache/2.2.22 do this? Regarding “What are you trying to accomplish?”: It is desirable if for (one of many) examples a … Read more
[RFC1035] defines <domain-name> as <domain-name> is a domain name represented as a series of labels, and terminated by a label with zero length. This means a <domain-name> must be a FQDN of the form an.example. with a terminating ‘.‘. Also, according to this RFC CNAME and MX EXCHANGE RDATA must be a <domain-name>. According to … Read more
Our domain registrar allows us to either make use of our own DNS servers or to use theirs (configuring DNS entries in their web interface); I suppose this is a common situation. We have opted to set up our own DNS servers. Now, the registrar’s DNS servers (which are no longer authoritative) return a response … Read more
Do glue records/child hosts override DNS wildcard entries or A records at the domain names DNS servers records? example: ns1.example.com = 1.1.1.1 at registrar DNS glue /child host ns1.example.com = 2.2.2.2 wild card entry at DNS server example.com if i ping ns1.example.com from 8.8.8.8 or external dns internet, will it go to 1.1.1.1 or 2.2.2.2? … Read more
Yahoo’s Mail servers are refusing to deliver messages to the mail server for a domain I manage. It complains that there is no MX record for the domain. According to my understanding for many years, and according to RFC 5321, if there is no MX record, mail servers are expected to fall back to the … Read more
In the process of troubleshooting an email message display issue, I noticed that an email header contained HTML. Example: From: <bob@foo.com> To: <john@foo2.com> Date: 11 Feb 13 12:00:23 Subject: Foo Test Message: <html><head><meta http-equiv=”Content-Language” content=”en-us” <meta http-equiv=”Content-Type” content=”text/html; charset=windows-1252″> <title>Foo Test 123</title><body>Hi Message-ID: <slkdsjflksdjflkslsjldkfjlsd-sldkfjslkdjfl@foo.com> The message header is added by an upstream server that I … Read more
RFC 821 indicates that the MAIL verb can be given a <forward-path> argument of the form “@ONE,@TWO:JOE@THREE” to indicate intermediate routing hosts (@ONE,@TWO) and the final receiver of the email (JOE@THREE). See 3.6, Relaying: https://www.rfc-editor.org/rfc/rfc821 RFC 2821 dictates that if an SMTP server is sent a forward-path of @ONE,@TWO:JOE@THREE that the email could be directly … Read more
My company is getting spammed by itself, or rather by it’s Qmail, we’ve got a few automated processes sending out e-mails with Qmail and Zend Mail. I’m not a expert in either of these, (I know literally nothing about them), and the ‘spam e-mails’ are Qmail telling us that a series of e-mails being sent … Read more
In SMTP commands are sent by the sender and responses which all begin with a numeric code are sent by the receiver. but then there’s this bit: RFC5321 sec4.2 Whenever possible, a receiver- SMTP SHOULD test the first digit (severity indication) of the reply code. Huh? Is that an error in the RFC? Do they … Read more
