On Fri, Sep 17, 2021 at 05:48:24PM -0400, Ian Evans <dheianev...@gmail.com> wrote:
> Just curious if anyone on the list has ever had issues with their postfix > server communicating with bell.net or their related sympatico.ca email > addresses? > > I've been trying to send to a few but keep getting "421 Connection limit > reached" followed by an eventual failure days later. I've seen people post > about this issue on discussion boards, but no clear idea of the fix or > issue. > > Thanks for any insight. Sorry, no. But if the connection limit just relates to connections from your server (likely), then it might help to increase the connection cache TTL so that connections stay open for longer: http://www.postfix.org/postconf.5.html#connection_cache_ttl_limit e.g.: /etc/postfix/main.cf: connection_cache_ttl_limit = 10s But if your server is only sending a small number of emails to those destinations, the above is probably useless. You could ask postmas...@bell.net what's happening. This forum might help, it contains complaints about this, but it's only for Bell customers: https://www.dslreports.com/forum/sympatdirect~days=365~start=30 Hmm, maybe not. You can see the topic titles, but it doesn't let you see anyone else's content. Wierdly unhelpful. cheers, raf
