[email protected] wrote: > January 19, 2026 9:28 PM, "Scott Vanderbilt" <[email protected]> wrote: > > > Hello. > > > > Hello, > > > Jan 19 20:23:20 franz smtpd[56169]: a1a922108d847ea8 smtp failed-command > > command="DATA" result="451 > > Try again later" > > > > This is not a general problem, as emails from other senders are being > > accepted normally. spamd is > > not a factor. > > > > $ grep -sr '451' * > lka_session.c: m_add_string(p_dispatcher, "451 > Temporary failure"); > $ grep -sr 'Try again later' * > $ > > smtpd is not emitting these so if spamd isn't a factor, another plugin is :-)
martijn@ made me notice off-list that this is not about receiving mails, but sending. You're just getting graylisted by sendgrid.
