Hi - I have a brand new email server with sendmail that I'm testing,
but it's getting error log messages like "Deferred: 452 4.5.3 Too
many recipients (AS780090)" from Office365 servers, even when very
few recipients are specified in email.
it's getting error log messages like "Deferred: 452 4.5.3 Too many recipients (AS780090)" from Office365 servers, even when very few
recipients are specified in email. The only thing I've found on the web
that perhaps applies is below. Although the people weren't using
sendmail.. Could this be my problem? I wonder if I've accidentally
turned TLS off. Is there a way to check?
markr...@gmail.com wrote:
it's getting error log messages like "Deferred: 452 4.5.3 Too many recipients (AS780090)" from Office365 servers, even when very few recipients are specified in email. The only thing I've found on the webWhat are "very few"?
Also see cf/README
SMTP_MAILER_MAXRCPTS [undefined] If defined, the maximum number of recipients to deliver in a single envelope for the
smtp, smtp8, esmtp, or dsmtp mailers.
that perhaps applies is below. Although the people weren't using sendmail.. Could this be my problem? I wonder if I've accidentallyLook for STARTTLS=client in the log and check the relay= value
turned TLS off. Is there a way to check?
for the name of those "Office365 servers".
Also check whether your sendmail version supports TLS:
sendmail -bt -d0.13 </dev/null 2>&1 |fgrep STARTTLS
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