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host gmail-smtp-in.l.google.com [2a00:1450:4013:c08::1b]
SMTP error from remote mail server after end of data:
550-5.7.1 [2a02:348:5e6:1::88bf 13] Messages with multiple addresses in
550 5.7.1 From: header are not accepted. i11si16916603ejw.240 - gsmtp
I'm using PHP sendmail and also using the address supplied by my host, and the error is the one I posted. So this isn't the solution.Mick wrote: Sat Nov 27, 2021 11:27 amHave you tried (just for testing purposes) using PHP sendmail using an email address supplied by your host?