IMAP connection failed (dovecot)

Delta Chat version
app=Delta Chat 1.0.2-gplay

Expected behavior
connect to my email server :wink:

Actual behavior
UI shows servername:143: Bad Response: failed to read greeting
the logs show it trying port 993, SSL error
retrying 993,

Steps to reproduce the problem

  1. fill out account details
    2.advanced - fill out detail
    the only non-standard about the setup seems to be my mail server doesn’t live on imap.domain:993 but on mail.domain:993

my server is dovecot - the desktop DeltaChat client runs fine.
(as do other IMAP clients)

Debug logs

12-21 17:05:41.443 18604 18640 E DeltaChat: Response from mail.monkimon.be:143: Bad Response: failed to read greeting
12-21 17:05:41.443 18604 18640 E DeltaChat: 
12-21 17:05:41.443 18604 18640 E DeltaChat: Some providers place additional information in your inbox; you can check them it eg. in the web frontend. Consult your provider or friends if you run into problems.
12-21 17:05:48.540 18604 18640 E DeltaChat: Response from mail.monkimon.be:993: an OpenSSL error
12-21 17:05:48.540 18604 18640 E DeltaChat: 
12-21 17:05:48.540 18604 18640 E DeltaChat: Some providers place additional information in your inbox; you can check them it eg. in the web frontend. Consult your provider or friends if you run into problems.
12-21 17:05:55.593 18604 18640 E DeltaChat: Response from mail.monkimon.be:993: Bad Response: failed to read greeting
12-21 17:05:55.593 18604 18640 E DeltaChat: 
12-21 17:05:55.593 18604 18640 E DeltaChat: Some providers place additional information in your inbox; you can check them it eg. in the web frontend. Consult your provider or friends if you run into problems.
12-21 17:06:02.650 18604 18640 E DeltaChat: Response from mail.monkimon.be:143: Bad Response: failed to read greeting
12-21 17:06:02.650 18604 18640 E DeltaChat: 
12-21 17:06:02.650 18604 18640 E DeltaChat: Some providers place additional information in your inbox; you can check them it eg. in the web frontend. Consult your provider or friends if you run into problems.

if you dont mind to give your real imap server address, i can try debug the connection error.