In my case, a single alias was used that expands to 5000 or more addresses in a
virtual_alias_maps table (after increasing virtual_alias_expansion_limit).
The error is reproduced both when sending an email to this alias address and when just
checking with 'sendmail -bv'.
John
On 10/6/22 16:37, Wietse Venema wrote:
How was your Postfix queue file with 5000 recipients created?
- with Postfix virtual_alias_maps expansion,
- with Postfix alias_maps expansion (/etc/aliases),
- by submitting a message with 5000 recipients over SMTP?
- ??
