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bluetiger9 / SmtpClient-for-Qt

An SMTP Client writen in C++ for Qt. Allows applications to send emails (MIME with text, html, attachments, inline files, etc.) via SMTP. Supports SSL and SMTP authentication.
https://github.com/bluetiger9/SmtpClient-for-Qt/wiki
GNU Lesser General Public License v2.1
449 stars 226 forks source link

sending multiple mails #133

Closed dietmarczekay closed 1 year ago

dietmarczekay commented 1 year ago

What is the best way to send 50 mails to different recipients? I getting back mails containing failure 554 and every additional mail contains one more recipient in the failure list

dietmarczekay commented 1 year ago

xxxx.yyyyyy@web.de: host mx-ha02.web.de[212.227.17.8] said: 554-Transaction failed 554-Reject due to policy restrictions. 554 For explanation visit https://postmaster.web.de/de/case?c=hi&i=ip&v=85.13.140.134 (in reply to end of DATA command)

bluetiger9 commented 1 year ago

@dietmarczekay, sending emails is bulk can be tricky. I would suggest checking with your mail provider what you are allowed to do.