This is affecting me as well... On Fri, 30 Jul 2021 14:57:45 +0200 Thomas Eckardt <thomas.ecka...@thockar.com> wrote:
> >something must changed in ssl/tls or in postfix. .... > > http://postfix.cs.utah.edu/source/official/postfix-3.4.1.RELEASE_NOTES > > Yes, there are many SSL/TLS related changes in the last postfix > releases. I do not use postfix, I run qmail instead. I am having major issues with Gmail, eBay, Outlook, Amazon, and many others. It looks like it might be something related to gray listing, as the error code is 451 for both. Gmail showed this error "451 connection timeout, try again later" That comes straight from the logs Aug 2 13:57:13 mail assp.pl[21426]: [Worker_4] [TLS-in] [TLS-out] 2607:f8b0:4864:20::b30 TLS-Connection idle for 180 secs - timeout Aug 2 13:57:13 mail assp.pl[21426]: [Worker_4] [TLS-in] [TLS-out] 2607:f8b0:4864:20::b30 [SMTP Status] 451 Connection timeout, try later Aug 2 13:57:13 mail assp.pl[21426]: [Worker_4] [TLS-in] [TLS-out] 2607:f8b0:4864:20::b30 disconnected: session:7F3EBD76F4B8 2607:f8b0:4864:20::b30 - processing time 0 seconds For another I got this Aug 2 13:23:00 mail assp.pl[21426]: [Worker_4] 185.55.116.145 info: got STARTTLS request from 185.55.116.145 Aug 2 13:23:00 mail assp.pl[21426]: [Worker_4] 185.55.116.145 info: STARTTLS is not allowed for 185.55.116.145 Aug 2 13:23:00 mail assp.pl[21426]: [Worker_4] 185.55.116.145 [SMTP Error] 502 command not implemented or not allowed to be used by 185.55.116.145 Aug 2 13:23:00 mail assp.pl[21426]: [Worker_4] IPv4/IPv6 disconnected: session:7F3EBC83AC78 185.55.116.145 - processing time 0 seconds Those might be unrelated. Not sure why STARTTLS is not available for some IPv4/IPv6 addresses, but works fine for others. The above was the same regardless of IPv4 or IPv6. Either way, the issue is the same, the senders email server sees connection issue and assumes the server is unreachable. A lot of email is not arriving as a result. -- William L. Thomson Jr. _______________________________________________ Assp-user mailing list Assp-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/assp-user
