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KodeTitan
Asked: 2010-01-13 12:30:54 +0800 CST

Postfix error "lost connection after RCPT' - email has over 100 + recipients

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I have a Postfix server that is having issues receiving a distribution email from a customer mail server that has over 100+ recipients. I have increased debug information using debug_peer_level and debug_peer_list.

What I have found is that after the Postfix server receives 99-102 "RCPT TO:" SMTP commands, it closes the connection.

The logs don't really indicate exactly what Postfix is doing at that point and I have increased my debug_peer_level to 99 to make sure I'm not missing any additional information.

postfix

1 Answers

  1. Best Answer

    Increase the recipient limit with

    smtp_destination_recipient_limit = 1024

    Add this line to your main.cf and then, reload postfix.

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