George A. Theall via plug on 5 Dec 2023 08:14:00 -0800 |
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Re: [PLUG] OpenSMTPD RFC 2822 Error |
On Tue, Dec 05, 2023 at 10:46:55AM -0500, N. Albert via plug wrote:
On 12/5/2023 10:17 AM, Casey Bralla via plug wrote:I'm building an OpenSMTPD mailer server in a virtualbox test environment. The test environment has a Bind9 DNS service running that recognizes XYZ.com as a valid domain. The test OpenSMTPD mail server is listed in the DNS as the mail server for that domain. I'm at the initial testing phase, but getting an RFC 2822 error. As far as I can tell, my message is RFC 2822 compliant, but OpenSMTPD seems to disagree. Can anybody see what I'm doing wrong? Here is my test sequence: telnet localhost 25 Trying ::1... Connected to localhost. Escape character is '^]'. 220 T-Mail ESMTP OpenSMTPD ehlo xyz.com 250-T-Mail Hello xyz.com [::1], pleased to meet you 250-8BITMIME 250-ENHANCEDSTATUSCODES 250-SIZE 36700160 250-DSN 250 HELP mail from: <casey@xyz.com> 250 2.0.0 Ok rcpt to: <casey@xyz.com> 250 2.1.5 Destination address valid: Recipient ok data 354 Enter mail, end with "." on a line by itself date: Tue, 2023-12-05 10:13:00 AM from: <casey@xyz.com> subject: Test This is a test eMail. . 550 5.7.1 Delivery not authorized, message refused: Message is not RFC 2822 compliant The logs don't add any additional detail about the error. As far as I can tell, RFC 2822 mandates a "date:" and "From: " field in the message data block. I think I've got those present. However, OpenSMTPD is notoriously persnickety about following the RFCs.I don't think your "Date" header is compliant. In particular, you're missing the UTC offset at the end, which I believe is technically required for compliance, and your format in general is non-standard. RFC 2822 itself discusses this. Something more like this is what I would expect: Date: Tue, 5 Dec 2023 10:13:00 -0500 Also, per the SMTP RFC, there should not be a space between MAIL FROM and :, as well as RCPT TO and :. - it looks like your example contains spaces. OpenSMTPD appears to be tolerant of this, but other servers may not be.
Another issue may be that the line starting "This is a test" is not separated from the headers above it by an empty line so it's regarded not as the message body but as a header line. And an invalid headersince it doesn't contain a colon and header body.
George -- theall@tifaware.com ___________________________________________________________________________ Philadelphia Linux Users Group -- http://www.phillylinux.org Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug