do not download messages for some time

[agutierrez25249]

• Android version: 9
• Device: Xiaomi redmi 8
• Delta Chat version: 1.0.3
• Expected behavior:
• Actual behavior:
• Steps to reproduce the problem:
  Delta without receiving messages for more than two and a half hours, k9 always received it.
  I just had to deactivate, and activate the data and delta received them immediately.
  It is also resolved, resetting the application, but this time I did not and waited to see. ....
• Screenshots:
• Logs:
  deltachat-log-20191228-084938.txt

[link2xt]

That is a new version of #1063

Have to finish chatmail/async-smtp#7 then. The logs actually explain doubled delay for SendMsgToSmtp: we do two immediate tries and both of them fail. Then we postpone the job.

10007:12-28 08:09:13.083 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:742: Smtp-job #6, action SendMsgToSmtp started...
10008:12-28 08:09:13.083 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:766: Smtp performs immediate try 0 of job #6, action 
10010:12-28 08:09:13.094 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:801: Smtp finished immediate try 0 of job #6, action SendMsgToSmtp
10011:12-28 08:09:13.094 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:766: Smtp performs immediate try 1 of job #6, action SendMsgToSmtp
10014:12-28 08:09:18.091 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:801: Smtp finished immediate try 1 of job #6, action SendMsgToSmtp
10015:12-28 08:09:18.091 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:876: Smtp removes job #6, action SendMsgToSmtp as it cannot be retried
10325:12-28 08:24:57.523 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:742: Smtp-job #6, action SendMsgToSmtp started...
10326:12-28 08:24:57.523 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:766: Smtp performs immediate try 0 of job #6, action SendMsgToSmtp
10328:12-28 08:24:57.534 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:801: Smtp finished immediate try 0 of job #6, action SendMsgToSmtp
10329:12-28 08:24:57.535 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:766: Smtp performs immediate try 1 of job #6, action SendMsgToSmtp
10334:12-28 08:25:02.309 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:801: Smtp finished immediate try 1 of job #6, action SendMsgToSmtp
10335:12-28 08:25:02.309 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:876: Smtp removes job #6, action SendMsgToSmtp as it cannot be retried
10950:12-28 08:48:38.527 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:742: Smtp-job #42, action SendMdn started...
10951:12-28 08:48:38.527 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:766: Smtp performs immediate try 0 of job #42, action SendMdn
10953:12-28 08:48:38.539 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:801: Smtp finished immediate try 0 of job #42, action SendMdn
10954:12-28 08:48:38.539 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:766: Smtp performs immediate try 1 of job #42, action SendMdn
11029:12-28 08:48:39.925 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:801: Smtp finished immediate try 1 of job #42, action SendMdn
11030:12-28 08:48:39.925 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:876: Smtp removes job #42, action SendMdn as it cannot be retried
11039:12-28 08:48:39.960 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:742: Smtp-job #43, action SendMdn started...
11040:12-28 08:48:39.960 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:766: Smtp performs immediate try 0 of job #43, action SendMdn
11061:12-28 08:48:40.338 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:801: Smtp finished immediate try 0 of job #43, action SendMdn
11062:12-28 08:48:40.338 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:876: Smtp removes job #43, action SendMdn as it cannot be retried
11063:12-28 08:48:40.350 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:742: Smtp-job #44, action SendMdn started...
11064:12-28 08:48:40.350 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:766: Smtp performs immediate try 0 of job #44, action SendMdn
11087:12-28 08:48:40.808 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:801: Smtp finished immediate try 0 of job #44, action SendMdn
11088:12-28 08:48:40.808 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:876: Smtp removes job #44, action SendMdn as it cannot be retried
11254:12-28 08:48:56.290 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:742: Smtp-job #2, action SendMdn started...
11255:12-28 08:48:56.291 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:766: Smtp performs immediate try 0 of job #2, action SendMdn
11263:12-28 08:48:59.760 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:801: Smtp finished immediate try 0 of job #2, action SendMdn
11264:12-28 08:48:59.760 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:876: Smtp removes job #2, action SendMdn as it cannot be retried
11285:12-28 08:49:18.948 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:742: Smtp-job #1, action SendMsgToSmtp started...
11286:12-28 08:49:18.948 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:766: Smtp performs immediate try 0 of job #1, action SendMsgToSmtp
11298:12-28 08:49:23.352 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:801: Smtp finished immediate try 0 of job #1, action SendMsgToSmtp
11299:12-28 08:49:23.352 30857 30891 I DeltaChat: ThreadId(9) src/job.rs:876: Smtp removes job #1, action SendMsgToSmtp as it cannot be retried

[r10s]

closing this, many code affecting downloading messages has been rewritten, if needed, reopen a new issue with a recent log.