Ich habe nun einmal das Log-Level erhöht (5). Ich sehe zwar die Nachrichten nicht im Klartext, aber immerhin ein wenig mehr.
Sobald ich meine Nachricht an den “fehlerhaften” User absende, erscheinen jede Menge dieser Zeilen im Log (ca. 5 Sekunden lang):
Wed Sep 2 15:56:53 2015: [ 3475] Could not open data of attachment 0. Error: 0x8004010F
Wed Sep 2 15:56:53 2015: [ 3475] Error in generating message 1066 for user drappenhoener in folder INBOX
Wed Sep 2 15:56:53 2015: [ 3475] {?} Error fetching mail
Wed Sep 2 15:56:53 2015: [ 3475] Could not open data of attachment 0. Error: 0x8004010F
Wed Sep 2 15:56:53 2015: [ 3475] Error in generating message 1063 for user drappenhoener in folder INBOX
Wed Sep 2 15:56:53 2015: [ 3475] {?} Error fetching mail
Wed Sep 2 15:56:53 2015: [ 3475] Could not open data of attachment 0. Error: 0x8004010F
Wed Sep 2 15:56:53 2015: [ 3475] Error in generating message 1062 for user drappenhoener in folder INBOX
Wed Sep 2 15:56:53 2015: [ 3475] {?} Error fetching mail
Die Nachricht wird weiterhin NICHT direkt im Thunderbird angezeigt.
Sobald ich auf “Abrufen” klicke, erscheinen im Log wieder die o.g. Fehlermeldungen. Aber keine neue Nachricht im Posteingang.
Beim nächsten Neu-Start von Thunderbird erscheinen alle neuen Emails. Im Log siehts dann so aus:
Wed Sep 2 16:04:13 2015: [ 3291] Accepted connection from 172.21.12.152
Wed Sep 2 16:04:13 2015: [ 3291] Starting worker process for IMAPs request
Wed Sep 2 16:04:14 2015: [ 5547] IMAP Login from 172.21.12.152 for user drappenhoener
Wed Sep 2 16:04:15 2015: [ 5547] Could not open data of attachment 0. Error: 0x8004010F
Wed Sep 2 16:04:15 2015: [ 5547] Error in generating message 1066 for user drappenhoener in folder INBOX
Wed Sep 2 16:04:15 2015: [ 5547] {?} Error fetching mail
Wed Sep 2 16:04:21 2015: [ 5547] Could not open data of attachment 0. Error: 0x8004010F
Wed Sep 2 16:04:21 2015: [ 5547] Error in generating message 1063 for user drappenhoener in folder INBOX
Wed Sep 2 16:04:21 2015: [ 5547] {?} Error fetching mail
Wed Sep 2 16:04:21 2015: [ 5547] Could not open data of attachment 0. Error: 0x8004010F
Wed Sep 2 16:04:21 2015: [ 5547] Error in generating message 1062 for user drappenhoener in folder INBOX
Wed Sep 2 16:04:21 2015: [ 5547] {?} Error fetching mail
Wed Sep 2 16:04:21 2015: [ 5547] Could not open data of attachment 0. Error: 0x8004010F
Wed Sep 2 16:04:21 2015: [ 5547] Error in generating message 1060 for user drappenhoener in folder INBOX
Wed Sep 2 16:04:21 2015: [ 5547] {?} Error fetching mail
Wed Sep 2 16:04:21 2015: [ 5547] Could not open data of attachment 0. Error: 0x8004010F
Wed Sep 2 16:04:21 2015: [ 5547] Error in generating message 1041 for user drappenhoener in folder INBOX
Wed Sep 2 16:04:21 2015: [ 5547] {?} Error fetching mail
Wed Sep 2 16:04:21 2015: [ 5547] Could not open data of attachment 0. Error: 0x8004010F
Wed Sep 2 16:04:21 2015: [ 5547] Error in generating message 1000 for user drappenhoener in folder INBOX
Wed Sep 2 16:04:21 2015: [ 5547] {?} Error fetching mail
Wed Sep 2 16:04:21 2015: [ 3291] Accepted connection from 172.21.12.152
Wed Sep 2 16:04:21 2015: [ 3291] Starting worker process for IMAPs request
Wed Sep 2 16:04:21 2015: [ 5547] Could not open data of attachment 0. Error: 0x8004010F
Wed Sep 2 16:04:21 2015: [ 5547] Error in generating message 984 for user drappenhoener in folder INBOX
Wed Sep 2 16:04:21 2015: [ 5547] {?} Error fetching mail
Ach ja: Im Zarafa WebApp wird die Nachricht direkt angzeigt.
Also ein Problem mit IMAP?!
Nochmals Danke!