Zope sendmail tag inconsistent
Zopists, Has anyone else noticed that the endmail tag will sometimes not send a mail even though the dtml method sucessfully completes? It's about one out of ten at high traffic times, and it happened on Zope.org too when I tested it by emailing my password to myself a few times. All my best, -- Jason Spisak 444@hiretechs.com
Jason Spisak wrote:
Zopists,
Has anyone else noticed that the endmail tag will sometimes not send a mail even though the dtml method sucessfully completes? It's about one out of ten at high traffic times, and it happened on Zope.org too when I tested it by emailing my password to myself a few times.
I had a system where it failed (also silently) every first time after reboot. I just moved to an external method that used /usr/sbin/sendmail as I did not have enough time to start debugging. Telnet to port 25 had just a very long (>30 sec) startup time, probably some DNS problem. AFAIK Zope does not (for some unknown reasons to me) use pythons SMTPlib but has rolled their own smtp interface. It has also been reported to fail with MS Exchange server, which someone fixed for himself by swithing to smtplib. IIRC the patches were also posted to zope or zope-dev list. IMHO the right solution for Zope would be swithing to smtplib, and if there are faults then fix them there (and maybe include fixed smtplib with Zope until fixes are included in mail python distro). There is no need to invent to similar but slightly and differently broken wheels, at least in Open Source Software there aint. ----------------- Hannu
Hannu Krosing wrote:
AFAIK Zope does not (for some unknown reasons to me) use pythons SMTPlib but has rolled their own smtp interface.
We wrote the sendmail tag before smtplib was written. At the time there was no existing standard smtp client library in python. -Michel
Hi, Stephen Pitts <smpitts@midsouth.rr.com> posted a patch that may help you. This patch replaces the socket-base code with smtplib calls. The original MailHost didn't work with our Exchange 5.5 server, but after I have applied the patch it works fine. Arpad Kiss ----- Original Message ----- From: Hannu Krosing <hannu@tm.ee> To: Jason Spisak <444@hiretechs.com> Cc: <zope@zope.org>; <zope-dev@zope.org> Sent: Tuesday, March 07, 2000 10:48 AM Subject: [Zope-dev] Re: [Zope] Zope sendmail tag inconsistent
Jason Spisak wrote:
Zopists,
Has anyone else noticed that the endmail tag will sometimes not send a mail even though the dtml method sucessfully completes? It's about one out of ten at high traffic times, and it happened on Zope.org too when I tested it by emailing my password to myself a few times.
I had a system where it failed (also silently) every first time after reboot.
I just moved to an external method that used /usr/sbin/sendmail as I did not have enough time to start debugging. Telnet to port 25 had just a very long (>30 sec) startup time, probably some DNS problem.
AFAIK Zope does not (for some unknown reasons to me) use pythons SMTPlib but has rolled their own smtp interface.
It has also been reported to fail with MS Exchange server, which someone fixed for himself by swithing to smtplib. IIRC the patches were also posted to zope or zope-dev list.
IMHO the right solution for Zope would be swithing to smtplib, and if there are faults then fix them there (and maybe include fixed smtplib with Zope until fixes are included in mail python distro). There is no need to invent to similar but slightly and differently broken wheels, at least in Open Source Software there aint.
----------------- Hannu
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From: "Jason Spisak" <444@hiretechs.com>
Zopists,
Has anyone else noticed that the endmail tag will sometimes not send a mail even though the dtml method sucessfully completes? It's about one out of ten at high traffic times, and it happened on Zope.org too when I tested it by emailing my password to myself a few times.
This is because: 1/ MailHost doesn't integrate into the transaction mechanism all that well (patches accepted =)) 2/ Email is inherintly an unreliabale form of data transport. Martijn Pieters | Software Engineer mailto:mj@digicool.com | Digital Creations http://www.digicool.com/ | Creators of Zope http://www.zope.org/ | The Open Source Web Application Server ---------------------------------------------
participants (5)
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Arpad Kiss -
Hannu Krosing -
Jason Spisak -
Martijn Pieters -
Michel Pelletier