Enda Cronnolly writes:
Hi,I have one contact who cannot email me without replying to an existing message that I've already sent. They get an error back Remote host said: 534 Message header size, or recipient list, exceeds policy limit.I can see it in the mail.log: 534 Message header size, or recipient list, exceeds policy limit.I don't see anything unusual with the message they try to send, its only addressed to me so can't be recipient list size, and I cannot find anything in the webadmin, or in /etc/smtpd or /etc/esmtpd-msa which sets a policy on message header size.Anyone got any idea on where I could look to see these policies?
There are several fixed limits: a maximum size of 5000 characters per line, and 100,000 bytes maximum total size of all headers. These limits are fixed and cannot be easily adjusted in the current version. The next build will have an adjustable control.
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