Title: smtplib.sendmail() does not work for mails bigger than 64 KiB
Type: crash Severity: normal
Components: Core, Library Versions: Jython 2.7.1, Jython 2.7.2
Milestone: Jython 2.7.3
Status: open Resolution: accepted
Dependencies: Superseder:
Assigned To: Nosy List: jeff.allen, r_walter, zyasoft
Priority: normal Keywords:

Created on 2019-11-25.14:51:35 by r_walter, last changed 2020-03-02.08:13:39 by jeff.allen.

File name Uploaded Description Edit Remove r_walter, 2019-11-25.14:51:34
double_rainbow.jpg r_walter, 2019-11-25.14:53:07 Picture used as attachment in the script
msg12796 (view) Author: Roland Walter (r_walter) Date: 2019-11-25.14:51:34
I tried to send an email with jython 2.7.1 and jython 2.7.2b2 with the attached The attached image is 85 KiB in size.
The OS is openSUSE Leap 15.1. The java version is 1.8.0_222.

The program fails with:

Traceback (most recent call last):
  File "", line 40, in <module>
    s.sendmail(sender, receiver, msg.as_string())
  File "/usr/local/jython2.7.1/Lib/", line 745, in sendmail
  File "/usr/local/jython2.7.1/Lib/", line 469, in rset
    return self.docmd("rset")
  File "/usr/local/jython2.7.1/Lib/", line 393, in docmd
    self.putcmd(cmd, args)
  File "/usr/local/jython2.7.1/Lib/", line 341, in putcmd
  File "/usr/local/jython2.7.1/Lib/", line 331, in send
    raise SMTPServerDisconnected('Server not connected')
smtplib.SMTPServerDisconnected: Server not connected

The log of the postfix mailserver shows:

2019-11-25T15:15:58.762073+01:00 dios postfix/smtpd[14421]: connect from localhost[]
2019-11-25T15:15:59.066917+01:00 dios postfix/smtpd[14421]: 104A2A08C1: client=localhost[]
2019-11-25T15:15:59.126283+01:00 dios postfix/cleanup[14434]: 104A2A08C1: message-id=<>
2019-11-25T15:20:59.227259+01:00 dios postfix/smtpd[14421]: timeout after DATA (65507 bytes) from localhost[]
2019-11-25T15:20:59.227865+01:00 dios postfix/smtpd[14421]: disconnect from localhost[] ehlo=1 mail=1 rcpt=1 data=0/1 commands=3/4

But the same program works with python.
msg12798 (view) Author: Roland Walter (r_walter) Date: 2019-11-25.14:53:07
I added the picture used as an attachment.
msg12826 (view) Author: Jeff Allen (jeff.allen) Date: 2019-12-13.07:37:01
We should be able to do better than that. Aiming for 2.7.2
msg12928 (view) Author: Jeff Allen (jeff.allen) Date: 2020-01-26.14:09:41
This is quite likely connected with the incomplete nature of our socket implementation, see for example, and I do not think a fix is feasible in the timescale of the 2.7.2 release.
Date User Action Args
2020-03-02 08:13:39jeff.allensetmilestone: Jython 2.7.3
2020-01-26 14:09:41jeff.allensetnosy: + zyasoft
messages: + msg12928
milestone: Jython 2.7.2 -> (no value)
2019-12-13 07:37:01jeff.allensetpriority: normal
resolution: accepted
messages: + msg12826
nosy: + jeff.allen
milestone: Jython 2.7.2
2019-11-25 14:53:07r_waltersetfiles: + double_rainbow.jpg
messages: + msg12798
2019-11-25 14:51:35r_waltercreate