Dave wrote:
Hello,
I'm adjusting my postfix configuration to try to cut down on the spam i'm
getting. I have noticed an event in my maillog that has me concerned that
i'm now inadvertently an open relay. If this is so i'd like to fix it.
Here's the error:
Aug 4 11:18:12 <hostname> postfix/smtp[22025]: 48A91150900A8:
to=<[email protected]>,
relay=mail.autourdupiano.com[62.128.135.33]:25, delay=31,
delays=0/0/31/0.12, dsn=2.0.0, status=deliverable (250 ok)
Aug 4 11:18:12 <Hostname> postfix/qmgr[21957]: 48A91150900A8: removed
This is a sender verification probe from your
reject_unverified_sender restriction. Notice the
"deliverable" tag.
As a general rule it's a bad idea to verify all senders since
some mail admins see this as abuse and will blacklist you.
Best use with caution.
-- Noel Jones
