Re: [mailop] Dear sympatico.ca

On 24/03/2023 23:37, Lyndon Nerenberg (VE7TFX/VE6BBM) via mailop wrote: If you are going to block my MTA from sending email to your customers, do us all the favour of preventing your users from sending email to my MTAs in the first place. When they send me mail, but you refuse to let me reply,

Re: [mailop] Microsoft?

On 04/03/2023 01:09, Mark Fletcher via mailop wrote: Hi All, I'm trying to warm up some new email server IP addresses, and I'm getting the following error sending to Microsoft addresses: [redacted].mail.protection.outlook.com 550 5.7.511 Access denied, ba

Re: [mailop] Gmail blocking of good customer

On 25/02/2023 12:32, Benny Pedersen via mailop wrote: Simon Greenwood via mailop skrev den 2023-02-24 22:09: This (which I didn't know) adds a whole different aspect to the issue - much has been said about how email is now centralised and is almost impractical to run as a small operator

Re: [mailop] Gmail blocking of good customer

On 24/02/2023 19:19, Rob McEwen via mailop wrote: Did you read the link?  Does your ESP have a postmaster account?  If they don't send enough messages ("a large volume") to Gmail they won't provide any information about reputation, except that that itself indicates that you haven't (and can't)

Re: [mailop] Gmail blocking of good customer

61 entries in SORBS, last January 23rd . This should be noted to your ESP, but you may be in a bit of cleft stick in this situation - changing IPs or  upgrading to a exclusive IP would still require reputation to be maintained, but shared IPs in a lot of ESPs now suffer from this kind of issue

Re: [mailop] Gmail blocking of good customer

Hello - Check the domain with MXToolbox if you haven't all ready - it's not impossible that the domain or servers are on a blacklist. Also check that SPF and DKIM/DMARC records are good and set up for your sending service and that reverse lookups are correct. Reputation in this case applies