Broken sendmail

[jtojnar]

Last year, Google made the delivery much stricter, and as a result FCP no longer notifies people about direct messages:

Jan 02 07:31:13 azazel postfix/smtp[1050192]: 251A3372458: to=<foo@gmail.com>, relay=gmail-smtp-in.l.google.com[2a00:1450:4013:c06::1b]:25, delay=0.79, delays=0.04/0.05/0.2/0.5, dsn=5.7.26, status=bounced (host gmail-smtp-in.l.google.com[2a00:1450:4013:c06::1b] said: 550-5.7.26 Your email has been blocked because the sender is unauthenticated. 550-5.7.26 Gmail requires all senders to authenticate with either SPF or DKIM. 550-5.7.26  550-5.7.26  Authentication results: 550-5.7.26  DKIM = did not pass 550-5.7.26  SPF [mxproxy.ogion.cz] with ip: [2a03:3b40:fe:81::1] = did not pass 550-5.7.26  550-5.7.26  For instructions on setting up authentication, go to 550 5.7.26  https://support.google.com/mail/answer/81126#authentication a640c23a62f3a-aac0eff19desi1759812166b.313 - gsmtp (in reply to end of DATA command))
Jan 02 07:31:13 azazel postfix/cleanup[1050190]: E504A372A05: message-id=<20250102063113.E504A372A05@azazel.mxproxy.ogion.cz>
Jan 02 07:31:13 azazel postfix/bounce[1050201]: 251A3372458: sender non-delivery notification: E504A372A05
Jan 02 07:31:13 azazel postfix/qmgr[2797795]: E504A372A05: from=<>, size=3863, nrcpt=1 (queue active)
Jan 02 07:31:13 azazel postfix/qmgr[2797795]: 251A3372458: removed
Jan 02 07:31:14 azazel postfix/smtp[1050192]: E504A372A05: to=<fcp@mxproxy.ogion.cz>, relay=mxredir.wedos.net[46.28.105.5]:25, delay=0.31, delays=0/0/0.08/0.22, dsn=2.0.0, status=sent (250 2.0.0 Ok: queued as 391EC10EB)
Jan 02 07:31:14 azazel postfix/qmgr[2797795]: E504A372A05: removed