On Fri, Oct 22, 2021 at 08:17:03PM -0000, Jasen Betts via Exim-dev wrote: > >> If this is really an exim bug, it's still worth correcting it, but you > >> should > >> really disable pipelining to yahoo, even when this bug will be resolved. > > > > Why would they bother advertising PIPELINING, if they don't > > actually mean to tolerate its use? That does not seem right... > > > > BINARYMIME > RFC3030 (https://datatracker.ietf.org/doc/html/rfc3030#section-4.2) > doesn't show pipelined BDAT: the sender synchronises before sending > body data. Dropping the connection seems like a resonable response > to such a synchronisation error. > > PIPELINING > RFC2920 (https://datatracker.ietf.org/doc/html/rfc2920) > synchrionises the pipeline before any message content is trasmitted > (the "DATA" command is allowed but the sender must wait for "354" > before sending content)
The yahoo.co.jp domain advertises only PIPELINING not CHUNKING or BINARYMIME: < 250-mtagw7025.mail.djm.ynwp.yahoo.co.jp < 250-PIPELINING < 250-8BITMIME < 250 SIZE 20480000 If they wanted to punish senders for *using* it, WTF advertise it? -- Viktor. -- ## List details at https://lists.exim.org/mailman/listinfo/exim-dev Exim details at http://www.exim.org/ ##