topic F2S Sending issue in Email

F2S Sending issue

Tallbloke1 — Tue, 08 Aug 2023 10:40:17 GMT

I am getting responses from MAILER-DAEMON@apm-internet.net when I send emails from my f2s account.

I am receiving emails OK and the settings match those posted on another thread

Any ideas?

Simon

Re: F2S Sending issue

Gondola — Tue, 08 Aug 2023 11:55:07 GMT

F2s email is managed by TalkTalk Business (TTB) and hosted on the apm-internet platform. If you're getting the mailer-daemon bounce from apm-internet but only when you try to send a mail message then that bounce will tell you why the mail cannot be delivered. e.g. wrong recipient email address, your sending email address is rejected by the recipient MX server, recipient mailbox full or otherwise unavailable for delivery.

What's the description accompanying the mailer-daemon bounce?

Re: F2S Sending issue

Tallbloke1 — Tue, 08 Aug 2023 15:41:51 GMT

It is happening when I reply to messages as well so the address in that case must be correct, message recierved as below...

142.250.27.27 failed after I sent the message.
Remote host said: 550-5.7.26 This mail is unauthenticated, which poses a security risk to the
550-5.7.26 sender and Gmail users, and has been blocked. The sender must
550-5.7.26 authenticate with at least one of SPF or DKIM. For this message,
550-5.7.26 DKIM checks did not pass and SPF check for [longstaffe.co.uk] did
550-5.7.26 not pass with ip: [85.119.248.221]. The sender should visit
550-5.7.26 https://support.google.com/mail/answer/81126#authentication for
550 5.7.26 instructions on setting up authentication. u24-20020a170906b11800b0098df2c99726si6526295ejy.147 - gsmtp
STARTTLS proto=TLSv1.2; cipher=ECDHE-ECDSA-AES128-GCM-SHA256; subject=/CN=mx.google.com; issuer=/C=US/O=Google Trust Services LLC/CN=GTS CA 1C3;

Re: F2S Sending issue

Gondola — Tue, 08 Aug 2023 15:54:43 GMT

Your personal domain email address has been rejected by the Gmail inbound mail servers because there is no SPF authentication.

Have TTB given you CP or Control Panel access to the DNS servers to add an SPF record or are you reliant on TTB to do that for you?

The e-mail address for domain admin for customers provided with a personal domain name: domainadmin@talktalkbusiness.co.uk

Re: F2S Sending issue

Gondola — Tue, 08 Aug 2023 20:56:49 GMT

Have you had a reply from the domains admin team at TTB?

Re: F2S Sending issue

Tallbloke1 — Tue, 08 Aug 2023 21:45:30 GMT

Hi @Gondola I've not heard back yet

Will let you know

Thanks for help so far

Re: F2S Sending issue

Gondola — Tue, 08 Aug 2023 21:56:52 GMT

OK, thanks for the update.

TTB's domain admins should be able to add the required SPF file to the DNS name servers. It's a quick and easy task. For consistency with the other f2s.com SPF files TTB should add to your DNS name servers a txt file containing the following: v=spf1 include:_spf.f2s.com ~all

You'll be able to check here to see when the SPF record has been added. Currently that test reports No SPF record found which is why Gmail is rejecting your mail messages.

Re: F2S Sending issue

Tallbloke1 — Thu, 10 Aug 2023 19:18:18 GMT

This appears to be sorted now thanks for your help @Gondola

Re: F2S Sending issue

Gondola — Thu, 10 Aug 2023 19:27:10 GMT

Yes, I see the TTB domain admins have added an SPF file appropriate for the apm-internet SMTP outgoing mail servers so that's good.

I'm pleased you're back in action.