Emails Not Being Received

[NeilM]

I am afraid that this is becoming an issue, yet again. I raised the identical matter only a couple of months ago, and it took a week for it to be resolved.

I am an officer of the local sailing club and we use a package, called MemberMojo  to handle our communications to our members. As an admin for the club, I am supposed to get a daily summary of activity on this package, but this stopped on, or just after the 13th March  (these messages come from "noreply.b.....e-sc@membermojo.co.uk")  I am also not receiving any club announcements or information, sent from this.

I know that it is not my own spam filters blocking this. As with the last time, the emails are being blocked by the @Tiscali.co.uk server and I have no mechanism to control this. I must wait for TalkTalk to sort it out. It is a TT992 problem, as happened in January.  MemberMojo is widely used by a lot of clubs, so any interruption is going to cause a lot of problems for a lot of people.

[NeilM]

Hi,

When I logged onto my email, this morning, I found a daily report from   noreply.b...e-sc@membermojo.co.uk   concerning the previous 24 hours activity at the club. It was the non-delivery of this report, last week, that made me realise that I was being blocked. Strangely enough, I was able to receive emails from that domain's technical support throughout. It would seem, however, that the issue has been resolved - for now.

I understand that TT512 indicates that my inbox is not available to the sender. However, this would appear to mean that this only affects a specific type of email from a specific sender. Throughout, all my other incoming mail was received fine. I have set up with IMAP on my incoming mail, which I assume to men that my inbox is actually hosted on the Tiscali server. I had not set up any filters against this sender, so must assume that it is happening in the Tiscali server. I don't believe that my inbox is exceeding any limits for storage, so what is the reason for what has happened?

[Ady-TalkTalk]

Hi NeilM, it looks like you've been able to get mail to the mojomember domain since your post. Do you still need help?

Ady

[Gondola]

OK, so not the TT992 spam rejection that I've asked TalkTalk Support to investigate.

TT512 is an indication that the mailbox cannot be found for delivery or is full or rejecting delivery or otherwise unavailable. Your mail service looks to have placed a block on further attempts to deliver for 48 hours. A stop on sending to your mailbox is just a sender protection measure applied temporarily.

This suggests that if your mailbox is not full and is working normally, with no Rules applied to divert or forward mail from the Inbox, then new mail messages should get delivered. But let me know if that's not the case.

[NeilM]

Hello Gondola. Thank you for getting back so quickly. I now have been sent copy of the message that was returned to the sender. This one was a TT512 fault - Recipient Undeliverable.  It is timestamped for 14th March 00:11.   I contacted the support service for MemberMojo and they tell me that they have had a lot of these identical issues, over the past year  or so, and specific to addressees with TalkTalk (or Tiscali) email accounts.

The message also includes the comment that the block will expire on Saturday 16th March at 00:11. However, I haven't received any further messages from this source, so not sure if it is now active, or not.

[Gondola]

Hello again Neil.

I can see no obvious reason for membermojo.co.uk to be blocked by TalkTalk but if you're getting the TT992 bounceback then that is an indication that inbound mail is rejected because of spam detection. It's possible that multiple users have marked other mail from the same servers as spam and that's triggered the rejections.

There's no obvious blacklisting by the normal agencies, SPF and DMARC are in place so normally I'd expect mail to be received ok.

I'll ask TalkTalk Community Support to check CloudMark for network blocking. A check can only be run for the 7 days prior to the check so if you can arrange for a notification to be sent out and confirm that the TT992 bounceback is still happening that would be good.