I haven’t tried it myself but it looks like that will give you a view on your IP reputation
Kind regards, Matthew Hi, I'm using postfix-3.8.5 on fedora40 (soon to be 42) and somehow outlook/live has stopped accepting our email. I'm in an unfortunate situation where many local user accounts are being forwarded to offsite gmail and outlook accounts.
I've implemented ARC and DKIM/SPF/DMARC but outlook still thinks we have a poor IP (209.216.94.60) reputation (log entry below). Every source I've checked (Talos, spamhaus, barracuda, etc) shows the reputation looks fine.
Some time ago I implemented rate limiting for yahoo/gmail/outlook individually to these bulk hosts, but it doesn't seem to be helping. Would someone review my settings?
/etc/postfix/ master.cfmicrosoft unix - - n - - smtp
-o syslog_name=postfix-microsoft
-o smtp_connect_timeout=$microsoft_connect_timeout
-o smtp_connection_cache_on_demand=$microsoft_connection_cache_on_demand
microsoft_initial_destination_concurrency = 1
microsoft_destination_concurrency_limit = 4
#microsoft_destination_recipient_limit = 4
microsoft_connect_timeout=3s
microsoft_destination_rate_delay = 61s
microsoft_connection_cache_on_demand=no
/etc/postfix/transport_microsoft
Ideas greatly appreciated.
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