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ossec-maild can't send email report when gmail SMTP used #2069

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RHarryH opened this issue Nov 14, 2022 · 1 comment
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ossec-maild can't send email report when gmail SMTP used #2069

RHarryH opened this issue Nov 14, 2022 · 1 comment

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@RHarryH
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RHarryH commented Nov 14, 2022

Google recently has changed their algorithm for spam detection. Mails requires now to have Message-ID header in order to be not rejected. Otherwise following message is shown: Messages missing a valid messageId header are not 550 5.7.1 accepted and the mail is not delivered to an inbox. Exactly this happens when ossec is configured to send mail via Google's SMTP.

Can it be fixed?
@RHarryH
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RHarryH commented Dec 30, 2022

I've finally found some time to solve that. Probably Google enforces now correct SPF record and mine was configured to accept mails sent only from Google Workspace. Therefore I did two things:

  • I updated SPF record to accept mails sent from the host with IP pointed by A record in my DNS configuration
  • I changed <email_from> email name in ossec.conf to have my domain in email domain instead of the default hostname

So far OSSEC emails are delivered to my mailbox correctly.

@RHarryH RHarryH closed this as completed Dec 30, 2022
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@RHarryH