At Thu, 5 Sep 2019 15:54:06 -0700 Kevin Bowen <kevin.t.bo...@gmail.com> wrote:
> > > >Is sendmail just passing things off to your hosted smtp provider (eg > using the hosted smtp provider as a "smart host") > > Yes, smart host. I don't see any rejections in sendmail's logs though. I'm > told that this machine has been exempted from any throttling at the smtp > provider end. Well, the smtp provider's server might just be extra busy and it struggling to handle the volume. > > Kevin Bowen > kevin.t.bo...@gmail.com <ke...@ucsd.edu> > > > On Thu, Sep 5, 2019 at 2:39 PM Robert Heller <hel...@deepsoft.com> wrote: > > > At Thu, 5 Sep 2019 14:16:31 -0700 Kevin Bowen <kevin.t.bo...@gmail.com> > > wrote: > > > > > > > > > > > > Do you have SPF records and DKIM signing set up? > > > > > > I believe so - we're nowadays using a hosted smtp provider (proofpoint), > > > and mail from mailman shows an SPF "pass" in my mail client. I think if > > > that were the issue it would be affecting all outgoing mail from our > > > domain, but this appears to be affecting only mailman > > > > Question: if you are using a hosted smtp provider, then what is Sendmail > > doing? Is sendmail just passing things off to your hosted smtp provider (eg > > using the hosted smtp provider as a "smart host") or is Sendmail actually > > trying to deliver mail directly? I would expect it to be the former, but > > check Sendmail's logs to be sure Sendmail is not doing something wrong. > > It is > > also possible that your hosted smtp provider changed something and you > > need to > > update Sendmail's configuration to match. Your symptions suggest that > > Sendmail is having trouble sending mail (eg facing rejection or other > > problems). > > > > One of the possible config issues might be that your hosted smtp provider > > is > > imposing limits on the number of messages per connection or the number of > > connections per hour, etc. You might need to update various *mailman* > > config > > options if that is the case. Again the place to look is Sendmail's logs. > > > > I am presuming that non-mailman outgoing mail from your is originating from > > your hosted smtp provider (your users are properly connecting to the hosted > > smtp provider directly to send mail). You probably need to make sure > > mailman/sendmail are doing things correctly as well. > > > > > > > > >And mailman 2.1.9 is a really old version... > > > > > > I know. It's a legacy system I inherited. > > > > > > Kevin Bowen > > > kevin.t.bo...@gmail.com <ke...@ucsd.edu> > > > > > > > > > On Thu, Sep 5, 2019 at 2:01 PM Robert Heller <hel...@deepsoft.com> > > wrote: > > > > > > > At Thu, 5 Sep 2019 13:53:26 -0700 Kevin Bowen <kevin.t.bo...@gmail.com > > > > > > > wrote: > > > > > > > > > > > > > > Hello, > > > > > This morning my mailman instance (2.1.9) was not delivering any mail > > - > > > > mail > > > > > was going into it but not going out. Restarting mailman and sendmail > > > > caused > > > > > mail to start flowing again, but several hours later there still > > appears > > > > to > > > > > be a backlog of several thousand files in /var/spool/mailman/out - > > > > they're > > > > > draining, but only very slowly, with some of them dating back to this > > > > > morning, around the time of the restart, and mail delivery appears > > > > delayed. > > > > > I'm not sure if it just needs more time to drain the queue, or if > > > > something > > > > > is stuck somewhere that needs to be removed - I don't see anything > > > > relevant > > > > > logged, but I'm not sure if I'm looking in the right place or what I > > > > should > > > > > be looking for. Can anyone give me any pointers to what i should be > > > > looking > > > > > at to troubleshoot this? > > > > > > > > Look at Sendmail's logs. My *guess* is that someone is greylisting (or > > > > even > > > > blacklisting) your domain or host. > > > > > > > > Do you have SPF records and DKIM signing set up? > > > > > > > > And mailman 2.1.9 is a really old version... > > > > > > > > > > > > > > > > > > > Kevin Bowen > > > > > kevin.t.bo...@gmail.com <ke...@ucsd.edu> > > > > > ------------------------------------------------------ > > > > > Mailman-Users mailing list Mailman-Users@python.org > > > > > https://mail.python.org/mailman/listinfo/mailman-users > > > > > Mailman FAQ: http://wiki.list.org/x/AgA3 > > > > > Security Policy: http://wiki.list.org/x/QIA9 > > > > > Searchable Archives: > > > > http://www.mail-archive.com/mailman-users%40python.org/ > > > > > Unsubscribe: > > > > > > https://mail.python.org/mailman/options/mailman-users/heller%40deepsoft.com > > > > > > > > > > > > > > > > > > > > > > -- > > > > Robert Heller -- 978-544-6933 > > > > Deepwoods Software -- Custom Software Services > > > > http://www.deepsoft.com/ -- Linux Administration Services > > > > hel...@deepsoft.com -- Webhosting Services > > > > > > > > > > > > > > > > > > > > -- > > Robert Heller -- 978-544-6933 > > Deepwoods Software -- Custom Software Services > > http://www.deepsoft.com/ -- Linux Administration Services > > hel...@deepsoft.com -- Webhosting Services > > > > > > > -- Robert Heller -- 978-544-6933 Deepwoods Software -- Custom Software Services http://www.deepsoft.com/ -- Linux Administration Services hel...@deepsoft.com -- Webhosting Services ------------------------------------------------------ Mailman-Users mailing list Mailman-Users@python.org https://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://wiki.list.org/x/AgA3 Security Policy: http://wiki.list.org/x/QIA9 Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/ Unsubscribe: https://mail.python.org/mailman/options/mailman-users/archive%40jab.org
