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Mails getting delayed and failing

PepijnDeneut
Hello,

We have complaints that we can't receive mails from different parties.
These are mostly small parties, outlook.com, gmail.com ect works fine.
They get errors like:#550 4.4.7 QUEUE.Expired; message expired ##
The problem is we don't see anything in the smtp log.
Anyone has an idea?

Thanks


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    I'm sorry, but I deleted the external link in your post. Please [Edit] that post, click on [Go Advanced] and attach your file to the post. We can't know if that external site is properly protected. The only malware I've gotten in over 10 years was from a link to a picture in this forum several years ago.

    Cheers - Bob
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
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  • 0
    I'm sorry, but I deleted the external link in your post. Please [Edit] that post, click on [Go Advanced] and attach your file to the post. We can't know if that external site is properly protected. The only malware I've gotten in over 10 years was from a link to a picture in this forum several years ago.

    Cheers - Bob
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
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