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On Wednesday, 6 November 2019 00:39:43 GMT Dale wrote: |
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> Grant Taylor wrote: |
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> > On 11/1/19 2:00 PM, Dale wrote: |
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> >> I think we came to the conclusion that one person is causing this. |
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> > |
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> > I don't agree with that conclusion. |
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> |
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> The only message I noticed missing was from one person. Since they are |
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> coming from one person, that is the cause. If the messages was from |
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> more than one person, then maybe there could be another conclusion. |
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|
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Correlation does not equal causation. Any one having similar email headers |
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could cause a message to be flagged as spam, or to be rejected by the |
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recipients mail server. Thankfully the M/L informs us messages from the list |
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to us were bounced and we can look at the online M/L archives to see what the |
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message might have been. Some email ISP services are not as obliging though - |
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see below. |
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|
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ANECDOTAL OBSERVATIONS: |
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|
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I've noticed recently even using the same sender address, but a different mail |
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client, could cause the difference between the message being accepted or |
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rejected by the recipient's mail server. I had to send an innocuous message |
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containing only plain text and a couple of URLs to a group of senders, with |
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their individual addresses in BCC: to ensure they remained anonymous among |
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themselves. |
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Two of the recipients' mail servers bounced my message with a "554 Message |
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Rejected". I tried again, this time sending the same message body, with the |
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same email client (KMail) to each of the two recipients individually. Same |
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deal: "554 Message Rejected" from both. |
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Then I used the Gmail webmail GUI to send the same message body to each |
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recipient and to my surprise it was accepted by their mail server and |
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delivered to their Inbox. Until that point they were none the wiser of my |
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repeated attempts to email the information they had requested. |
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Using KMail configured to use smtp.gmail.com Vs using Gmail's webmail |
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generates slightly different headers and I surmised this is all there was to |
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my message being rejected in the first two attempts. |
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-- |
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Regards, |
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Mick |
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