On Mon, 24 Oct 2022 10:02:10 +1100, Cameron Simpson wrote:
> I'd say GMail are rudely dropping traffic to port 2525. Maybe try just > 25, > the normal SMTP port? 2525 is an alternative to 587, the standard TLS port. 25 and 587 work. telnet smtp.gmail.com 587 Trying 2607:f8b0:4023:1004::6d... Connected to smtp.gmail.com. Escape character is '^]'. 220 smtp.gmail.com ESMTP s6-20020a056870ea8600b0010bf07976c9sm13154711oap. 41 - gsmtp EHLO 501-5.5.4 Empty HELO/EHLO argument not allowed, closing connection. 501 5.5.4 https://support.google.com/mail/?p=helo s6-20020a056870ea8600b0010bf07976c9sm13154711oap.41 - gsmtp Connection closed by foreign host. The EHLO needs a domain. Port 25 is the same. -- https://mail.python.org/mailman/listinfo/python-list
