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im getting 550 relay denied from gmail and microsoft help!

Posted: Fri Feb 10, 2023 7:35 am
by teknikl
i was listed on spamhaus yesterday, corrected it, and all blacklists seem to show OK but im getting this 550 relay denied from a lot of mail providers never seen that before pls help!

ip is 207.35.3.3

sending from mment.ca which has SPF and dmarc and dkim all setup, so it makes no sense to me.

Re: im getting 550 relay denied from gmail and microsoft help!

Posted: Fri Feb 10, 2023 10:29 am
by Chrispcritters
Spamhaus listings are generally indicative of an ongoing spam issue.

If users of various mail platforms reported messages from your server as spam, each provider may wait before accepting mail from your server again.

I'd check the specifics of the 550 response and see if they are saying why they are rejecting mail from your server.

It looks like there might be a configuration error with your SPF record. "_spf.mailersend.net" should probably be "include:_spf.mailersend.net"

Re: im getting 550 relay denied from gmail and microsoft help!

Posted: Mon Feb 13, 2023 8:39 am
by teknikl
there's no details that's the odd thing.

I setup a spam scanner (EFA project) box and am relaying through it in the meantime and it all seems to be working, and it also scans all the outbound emails for spam to make sure we're not sending any. I guess I'll try again in a week or so to see if my IP is allowed again?

it's all email from all domains on my server on that IP that were getting 550 relay denied errors... so it seems the IP got blacklisted but the reputation seems fine on all the reputation sites.

Re: im getting 550 relay denied from gmail and microsoft help!

Posted: Mon Feb 13, 2023 9:01 am
by Chrispcritters
You may want to setup Google's Postmaster Tools -- https://www.gmail.com/postmaster/

I think the one for MS platforms is at https://sendersupport.olc.protection.outlook.com/pm/

Setting up an account at each may provide some additional insight into delivery issues.