smtp_receive_timeout Use: main Type: time Default: 5m
This sets a timeout value for SMTP reception. It applies to all forms of SMTP input, including batch SMTP. If a line of input (either an SMTP command or a data line) is not received within this time, the SMTP connection is dropped and the message is abandoned. A line is written to the log containing one of the following messages:
SMTP command timeout on connection from... SMTP data timeout on connection from... The former means that Exim was expecting to read an SMTP command; the latter means that it was in the DATA phase, reading the contents of a message.
If the first character of the option is a “$” the option is expanded before use and may depend on $sender_host_name, $sender_host_address and $sender_host_port.
The value set by this option can be overridden by the -os command-line option. A setting of zero time disables the timeout, but this should never be used for SMTP over TCP/IP. (It can be useful in some cases of local input using -bs or -bS.) For non-SMTP input, the reception timeout is controlled by receive_timeout and -or.
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