lost connection while sending end of data error

Christos Chatzaras chris at cretaforce.gr
Fri Apr 20 00:51:52 EEST 2018

By changing the postfix main.cf setting from the default:

default_destination_recipient_limit = 50


default_destination_recipient_limit = 1

it solve the issue.

Do you think it's a postfix issue so I have to use their mailing list?

> On 19 Apr 2018, at 21:45, Christos Chatzaras <chris at cretaforce.gr> wrote:
> I use dovecot-lmtp and postfix. When I send e-mail to 2 recipients (or more) at the same time and if one of them is over quota (or under quota and the message I send is bigger than his free space) mailq shows:
> -Queue ID-  --Size-- ----Arrival Time---- -Sender/Recipient-------
> 20B03336F22    26099 Thu Apr 19 18:02:47  support at example.com
> (lost connection with server25.example.org[private/dovecot-lmtp] while sending end of data -- message may be sent more than once)
>                                        user1 at example.com
>                                        user2 at example.com
> E-mails sent from the same domain on same server so it's a local delivery.
> If I send the e-mail to the over quota user ( only him on To: ) then I get a bounce that says that user is over quota which is the correct behaviour.
> I think the problem started after I upgrade dovecot-2.2.35 to dovecot-2.3.1.
> Is this a known bug?

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