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On 18-Aug-20 8:43, Caveman Al Toraboran wrote: |
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> |
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> would i get blacklisted for simply not using |
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> spf/dkim/etc? even if no other user is using the |
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> mail service other than me and i'm not mass |
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> mailing? |
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Well, hear my story: I too was running simple mail-server. Just |
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a few users I trust, no public relaying, so what could possibly |
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go wrong? As it turned out later: everything! |
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For a few months all was running as expected, but then some time |
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later all valid email sent by my mail-server was suddenly flagged |
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as spam and rejected. It took me some time to investigate but |
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finally I found my domain (not IP) was on Spamhaus' DBL (domain |
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block list). How did it get there? |
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It seems that someone has created faked spf-record for my domain |
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(I was not using dnssec at that time) and somehow spread it out |
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(maybe using dns cache-poisoning?) to many public dn-resolvers. |
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With that spf-record he authorised many spam-sending hosts to |
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send email with sender field pointing to my domain. |
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And that was even bigger problem, because one can easily switch |
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to different vps/IP if it gets blacklisted, but I did not want to |
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abandon my domain. It took me quite long time to fix everything. |
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So short answer is yes! Even if you are not mass-mailing, you can |
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still get blacklisted, if you do not secure your IP, domain and |
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mail-server properly... |
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|
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Jarry |
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|
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-- |
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_______________________________________________________________ |
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This mailbox accepts e-mails only from selected mailing-lists! |
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Everything else is considered to be spam and therefore deleted. |
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