A. Schulze: > > > Am 19.06.19 um 12:53 schrieb Viktor Dukhovni: > >> On Jun 19, 2019, at 6:37 AM, Ralf Hildebrandt <r...@sys4.de> wrote: > >> > >> The error message says: > >> > >> 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) > > > > Ralf, your inattention to detail disappoints me. :-( > > > > The correct reply to "DATA" is "354" not "250". Something is awfully > > out of sync if Gmail is returning "250" in response to "DATA". > > to me this looks more as a 250 OK response _after_ data is sent because a > typical queue ID is part of the response string.
My logs disagree. They show '250 2.1.5 OK gibberish - gsmtp' in response to RCPT TO commands (in address verification probes). whereas the end-of data response says '250 2.0.0 OK ...'. So let's not confuse the problem with false speculation. Wietse RCPT TO response: spike postfix/smtp[98630]: 45S7Pj6GFVzJrNr: to=<**censored**@gmail.com>, relay=gmail-smtp-in.l.google.com[172.217.197.27]:25, delay=0.53, delays=0.0018/0.013/0.36/0.15, dsn=2.1.5, status=deliverable (250 2.1.5 OK c9si6247152qvn.4 - gsmtp) end-of-data response: spike postfix/smtp[20694]: 45TVzq0TsDzJrNy: to=<**censored**@gmail.com>, relay=gmail-smtp-in.l.google.com[172.217.197.27]:25, delay=1.8, delays=0.11/0.013/0.55/1.1, dsn=2.0.0, status=sent (250 2.0.0 OK 1560962408 h14si11564740qvj.217 - gsmtp)