Sending mass email

[RonP2]

I have recently switched from PlusNet to EE for my broadband, and all seems to be working fine.  However, I do have one problem which may or may not be related to the switch.  I am a committee member of a local club and I regularly send out mass emails to about 500 members (club news, monthly magazine, etc.)  I use Gmail for this and, prior to the switch, everything was fine.  But since I set up the new EE router, when I carry out a mass email operation I receive notifications from the Mail Delivery Subsystem telling me that several of the messages have not been delivered.  A typical such message is "BST, policy (3.2.1.1) - Your message looks like SPAM or has been reported as SPAM".

All the non-delivered messages are to @btinternet.com addresses, although some to these addresses do go through.  Very odd!  Could this be related to my recent change to EE?  If anyone could suggest a solution I would be very grateful.

[Peter_W]

Welcome to the Community, @RonP2 

I've not known of any issues with EE connections blocking outgoing mail.

When you mention using Gmail, is the address you're sending from a consumer @Gmail.com domain, or do you have your own separate domain?

Peter

[XRaySpeX]

Are you using GMail via its online Webmail or using a mail app on your device?

If the latter, it is possible that your current dynamic public IP has been compromised by a previous user with that IP by sending spam & blacklisted by various DNSBL sites. Check your current public IP with IP Blacklist Check - Email/Domain/IP Blacklist Checker 

Try rebooting router until you are given a new public IP.

[RonP2]

Hi Peter

Thanks for getting back to me.  I'm sending from a consumer address, using the Gmail online Webmail.

[RonP2]

Hi.  Thanks for the reply.  I am using GMail via its online Webmail.

[Peter_W]

Cheers @RonP2 😊

I can't say for sure what Google's terms of service are for Gmail, but sometimes they do have stipulations in place around bulk emailing.

As BT internet seems to be affected especially here though, I am leaning towards your dynamic IP being flagged by a spam filter like @XRaySpeX has mentioned above. 

I'd recommend leaving your Hub powered off for at least 30 minutes, and this should assign you a fresh IP.

Peter

[XRaySpeX]

@Peter_W : When you are using Webmail I'm not sure whether the DNSBLs sees your own IP but only that of the Webmail site.

[Peter_W]

@XRaySpeX I'm not sure on that either, but I do know BT mail actively blocks emails from sources it determines may be malicious. 

If the steps above don't make a difference, there are questions we can potentially ask around if something is happening at the receiver's end.

Peter