* Wietse Venema <postfix-users@postfix.org>: > Ralf Hildebrandt: > > Jun 19 09:52:43 mail-cvk postfix/smtp[32063]: 45THH93PXyz1Z4Kq: > > to=<malgorzata.ixxx...@gmail.com>, > > relay=gmail-smtp-in.l.google.COM[173.194.76.26]:25, delay=4.8, > > delays=3.3/0.04/0.62/0.84, dsn=5.5.0, status=bounced (Protocol error: host > > gmail-smtp-in.l.google.COM[173.194.76.26] said: 250 2.1.5 OK > > w9si551343wmd.47 - gsmtp (in reply to DATA command)) > > Perhaps they messed up their SMTP command pipelining implementation. > > Workaround: > > /etc/postfix/main.cf: > smtp_delivery_status_filter = pcre:/etc/postfix/smtp_dsn_filter > > /etc/postfix/smtp_dsn_filter: > /^5(\.5\.0 Protocol error: .+ in reply to DATA command.+)/ 4$1 > > This way some deliveries will be delayed instead of bounced.
I applied this at mail.python.org > We could use debug_peer_list=google.com to make a recording (with > debug_peer_level=1). I applied this at mail.python.org -- [*] sys4 AG https://sys4.de, +49 (89) 30 90 46 64 Schleißheimer Straße 26/MG, 80333 München Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 Vorstand: Patrick Ben Koetter, Marc Schiffbauer Aufsichtsratsvorsitzender: Florian Kirstein
