Re: [exim] errors by sender verifying

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Author: Thomas Hochstein
To: exim-users
Subject: Re: [exim] errors by sender verifying
Frank Elsner schrieb:

> If I understand the message correct, the configuration at "t-online"
> is broken by not accepting empty envelopes.

Or they do not even accept the connection, or they do not accept the
HELO. All of that may be due to excessive sender callout - T-Online is
applying rate limiting and some different anti-spam measures, called
"Plattformschutz" (protecting its mail infrastructure).