On Thu, 11 Mar 2021, Olaf Hopp (SCC) via Exim-users wrote:
my administration writes one(!) email with more than 3000
receipients
in the envelope. (Please, no discussion about the sense of this.
Period.)
Receiving that mail takes about 2 two hours.
Delivering that mail is done very quick, as usual.
I started debugging this and I recognized that
after every "RCPT TO" it took a sucessive increasing time
until the "250 Accepted" was answered.
At the beginning this was a 10th of a second.
After 1000 recipients there was a delay of ~one second
after the 2000th recipients this delay increased smoothly
to 2 secends ofter each rcpt-to
Any ideas what's happening here ?
The increasing delays remind me of the delays for failed logins.
Is there some sort of authentication, or similar pam or SMB access,
to check the existence of each recipient ?
--
Andrew C. Aitchison Kendal, UK
and...@aitchison.me.uk
--
## List details at https://lists.exim.org/mailman/listinfo/exim-users
## Exim details at http://www.exim.org/
## Please use the Wiki with this list - http://wiki.exim.org/
