Here is what I see on the error.log:

Oct 15 17:37:58 imap(technical@mydomain.name)<62260><9ucgmLax7s3F6FH2>: Error: Mailbox INBOX: Cache /var/spool/virtual/mydomain.name/technical/mdbox/mailboxes/INBOX/dbox-Mails/dovecot.index.cache: Deleting corrupted cache record uid=798:

UID 798: Broken physical size in mailbox INBOX: read(/var/spool/virtual/mydomain.name/technical/mdbox/storage/m.3) failed: Cached message size larger than expected (174159 > 42234, box=INBOX, UID=798)

Oct 15 17:37:58 imap(technical@mydomain.name)<62260><9ucgmLax7s3F6FH2>: Error: Mailbox INBOX: UID=798: read(/var/spool/virtual/mydomain.name/technical/mdbox/storage/m.3) failed: Cached message size larger than expected (174159 > 42234, b

ox=INBOX, UID=798) (FETCH BODY[])

Oct 15 17:38:08 imap(technical@mydomain.name)<80433><rJG/mLax9c3F6FH2>: Error: Mailbox INBOX: Cache /var/spool/virtual/mydomain.name/technical/mdbox/mailboxes/INBOX/dbox-Mails/dovecot.index.cache: Deleting corrupted cache record uid=798:

UID 798: Broken virtual size in mailbox INBOX: read(/var/spool/virtual/mydomain.name/technical/mdbox/storage/m.3): FETCH BODY[] got too little data: 42930 vs 176568

Oct 15 17:38:15 imap(technical@mydomain.name)<80488><AATGmLax9s3F6FH2>: Error: Mailbox INBOX: Cache /var/spool/virtual/mydomain.name/technical/mdbox/mailboxes/INBOX/dbox-Mails/dovecot.index.cache: Deleting corrupted cache record uid=798:

UID 798: Broken virtual size in mailbox INBOX: read(/var/spool/virtual/mydomain.name/technical/mdbox/storage/m.3): FETCH BODY[] got too little data: 42930 vs 176568

Oct 15 17:38:36 imap(technical@mydomain.name)<81313><Dnxumrax/c3F6FH2>: Error: Mailbox INBOX: Cache /var/spool/virtual/mydomain.name/technical/mdbox/mailboxes/INBOX/dbox-Mails/dovecot.index.cache: Deleting corrupted cache record uid=798:

UID 798: Broken virtual size in mailbox INBOX: read(/var/spool/virtual/mydomain.name/technical/mdbox/storage/m.3): FETCH BODY[] got too little data: 42930 vs 176568

Oct 15 17:39:00 imap(technical@mydomain.name)<82161><U3bSm7axDM7F6FH2>: Error: Mailbox INBOX: Cache /var/spool/virtual/mydomain.name/technical/mdbox/mailboxes/INBOX/dbox-Mails/dovecot.index.cache: Deleting corrupted cache record uid=798:

UID 798: Broken virtual size in mailbox INBOX: read(/var/spool/virtual/mydomain.name/technical/mdbox/storage/m.3): FETCH BODY[] got too little data: 42930 vs 176568

Outlook shows no error at all. Just doesn't display mails.

I am not using SSL.

On Thu, 15 Oct 2020 at 18:09, Goetz Schultz <dovecot.expire1225@suelze.de> wrote:

Hi,

can you see the server-side logs if there is any error?
What error does Outlook give you? Is the connection via SSL or plain?

Thanks and regards

Goetz R. Schultz

On 15/10/2020 15:40, Odhiambo Washington wrote:
> On Tue, 13 Oct 2020 at 14:00, Jerry <jerry@seibercom.net> wrote:
>
>> On Tue, 13 Oct 2020 09:48:16 +0300, Odhiambo Washington stated:
>>> Hola,
>>>
>>> Dovecot- 2.3.11.3 with mdbox.
>>>
>>> I have a situation where I can access (view) the e-mails when I use a
>>> web-based IMAP client, but NOT M$ Outlook (configured for IMAP).
>>> Is there an easy way to solve this?
>>> When I send an e-mail to the mailbox address, I can see it on the
>>> webmail, but not on Outlook.
>>
>> What version of MS Outlook are you using?
>>
>> --
>> Jerry
>>
>
>
> Hi Jerry,
>
> I am using Outlook from Office 2019.
>
> Thanks
>

Best regards,
Odhiambo WASHINGTON,
Nairobi,KE
+254 7 3200 0004/+254 7 2274 3223
"Oh, the cruft.", grep ^[^#] :-)