Strange undelivered behavior after ISPConfig migration

Discussion in 'General' started by blinden, Mar 13, 2018.

  1. blinden

    blinden Member

    In a previous thread I had mentioned a move I made from ISPConfig to ISPConfig 3.1.11 and manually moving emails over on a per-domain basis.

    One of the domains I moved yesterday had an incident early this morning where there was about 1000 new "undeliverable" errors, 95% of them just being standard "Undelivered Mail Returned to Sender" but a handful of them also having more complete subjects, those ones indicate to me that they were definately spam emails: "Undeliverable: Avoid sexual failures - at unbeatable price! Superpowered medications exclusively!" and stuff like that.

    All of these emails showed up at the exact same time: 05:52 local time. They seem to be corrupt records, when I do a postcat on one of them I get the following:
    sender_fullname: om: "Postmaster"
    Sender: "Postmaster"
    To: "Postmaster"
    Subject: [BULK] Undeliverable: Make penis work - all total
    unknown_record_type: cheapo! Finest medicaments here!
    Message-ID: <[email protected]>
    MIME-Version: 1.0
    Content-Type: te
    unknown_record_type: /plain;
    Content-Transfer-Encoding: 7bit
    X-Priority: 5 (Lowest)
    X-Priority: 5 (Lowest)
    unknown_record_type: riority: Low
    X-MSMail-Priority: Low
    X-Mailer: Microsoft Outlook 15.0
    unknown_record_type: AQKO49i16dQrO1Y4qARJBdx0+VEviA==
    Importance: Low
    unknown_record_type: 000000007E4B4262971D614594FC520A
    unknown_record_type: C38F3B0700C3B68E10F77511CEB4CD00AA00BBB6E600000000000B0
    unknown_record_type: 06EEB7B4CFAF88745A6C4FF4FBE022CAC000000005CF7000
    postcat: warning: 1520934811.M506906P11979.RemovedDomain,S=675,W=693:2,S: unexpected EOF in data, record type 48 length 56
    postcat: fatal: record read error​
    I haven't seen this on any other accounts that I've transitioned to the new server yet, I've changed the customers password as a precaution, but as I mentioned, I don't see any indication of any outgoing emails at or around that time. A very curious situation.

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