Gmail failure 550-5.7.1

whosethis · Sep 24, 2024

Hey guys,

Was trying to warm up a mail server (slowly ramping up send volume, about 100 a day), bounce rates per MailWizz were <0.15% and Unsubs <0.08%
Mail-tester score 10/10 and before sending campaign Gmail was showing PASS on everything - all settings are 100% OK.
Email content passed for no spam trigger words as well.

Noticed no responses though so decided to investigate about 10 days in and turns out Gmail is completely stonewalling.
Any emails sent to Gmail do not arrive anywhere; not in the inbox, not in promotions not even spam!
Even emailed myself from Gmail to a [email protected] address and received it (so Gmail is sending to domain) but any emails from [email protected] is straight up going to quarantine.
The mail delivery failure report states:

Gmail has detected that this message is
550-5.7.1 likely unsolicited mail. To reduce the amount of spam sent to Gmail,
550-5.7.1 this message has been blocked.

Does anyone know what the solution is here?
Is the IP permanently burned for emailing Gmail purposes? Or will I be able to resume warmup later?
I am able to email Outlook (because was not sending any email to Outlook during warmup)

Thanks in advance!

Sandie2018 · Sep 24, 2024

It has just happened to me too. Emails are sent to Gmail but they are not delivered to any of the inboxes, spam box including.

whosethis · Sep 24, 2024

Sandie2018 said:
It has just happened to me too. Emails are sent to Gmail but they are not delivered to any of the inboxes, spam box including.

wow so im not alone - whats your plan? what are you going to do about it?

Sandie2018 · Sep 24, 2024

whosethis said:
wow so im not alone - whats your plan? what are you going to do about it?

Since gmail accepts emails from gmail accounts, I am going to send from gmail accounts to gmail and I am going to send to other email addresses from my domain accounts.

whosethis · Sep 25, 2024

Sandie2018 said:
Since gmail accepts emails from gmail accounts, I am going to send from gmail accounts to gmail and I am going to send to other email addresses from my domain accounts.

mmm suppose that could work depending on what your offer is... issue is though it doesn't look as "professional" as proper domain address
Sounds like you dont think it will ever work for Gmail again?

Does anyone here know if this 550 - 5.7.1 Gmail failure is permanent or if it evert reverts back to working?

Thanks

tubeboost · Sep 25, 2024

What post server do you use?

Sandie2018 · Sep 25, 2024

whosethis said:
mmm suppose that could work depending on what your offer is... issue is though it doesn't look as "professional" as proper domain address
Sounds like you dont think it will ever work for Gmail again?

Does anyone here know if this 550 - 5.7.1 Gmail failure is permanent or if it evert reverts back to working?

Thanks

You can use G Suite and use your domain, then it looks professional.

derainbow · Sep 25, 2024

It sounds like Gmail has flagged your domain. You might want to check your domain's reputation and consider consulting with Gmail support.

whosethis · Sep 25, 2024

Sandie2018 said:
You can use G Suite and use your domain, then it looks professional.

yes... becomes a lot more expensive as well though...

derainbow said:
It sounds like Gmail has flagged your domain. You might want to check your domain's reputation and consider consulting with Gmail support.

I have a bigger problem now, the name itself seems to be a problem...

the problem domain was say domain.net but now even domain.com emails (which are entirely separate and has never done outreach) also seem to be going to Spam and straight hard bouncing on Outlook... even though never emailed Outlook/hotmail from domain.net more than maybe 5 times?!

wtf?! this is horrible - how can they be targeting domain.com when it was never even used for outreach?
anyone know what I can do? will this blow over in a few days?

whosethis said:
Hey guys,

Was trying to warm up a mail server (slowly ramping up send volume, about 100 a day), bounce rates per MailWizz were <0.15% and Unsubs <0.08%
Mail-tester score 10/10 and before sending campaign Gmail was showing PASS on everything - all settings are 100% OK.
Email content passed for no spam trigger words as well.

Noticed no responses though so decided to investigate about 10 days in and turns out Gmail is completely stonewalling.
Any emails sent to Gmail do not arrive anywhere; not in the inbox, not in promotions not even spam!
Even emailed myself from Gmail to a [email protected] address and received it (so Gmail is sending to domain) but any emails from [email protected] is straight up going to quarantine.
The mail delivery failure report states:

Gmail has detected that this message is
550-5.7.1 likely unsolicited mail. To reduce the amount of spam sent to Gmail,
550-5.7.1 this message has been blocked.

Does anyone know what the solution is here?
Is the IP permanently burned for emailing Gmail purposes? Or will I be able to resume warmup later?
I am able to email Outlook (because was not sending any email to Outlook during warmup)

Thanks in advance!

@UncLe Spam sorry to bother you sir - but you're the guru on this stuff!

Could you please shed some light? feel free to DM if you prefer! Would really appreciate any pointers. Thanks in advance!

Really worried about this bottom part:

whosethis said:
I have a bigger problem now, the name itself seems to be a problem...

the problem domain was say domain.net but now even domain.com emails (which are entirely separate and has never done outreach) also seem to be going to Spam and straight hard bouncing on Outlook... even though never emailed Outlook/hotmail from domain.net more than maybe 5 times?!

wtf?! this is horrible - how can they be targeting domain.com when it was never even used for outreach?
anyone know what I can do? will this blow over in a few days?

UncLe Spam · Sep 25, 2024

whosethis said:
@UncLe Spam sorry to bother you sir - but you're the guru on this stuff!

Could you please shed some light? feel free to DM if you prefer! Would really appreciate any pointers. Thanks in advance!

whosethis · Sep 25, 2024

UncLe Spam said:
All I've ever done is webmail(mailing with web accounts AOL|Yahoo|Gmail|GMX|Hotmail|Outlook|etc...via webmail or SMTP) bro and some other blackhat ways of mail mainly webmail though.

thanks for the response.

Sigh looks like im stuck...

btw what software do you use to control say 1k or 10k outlook/hotmail webmail accs via SMTP? is it m@ilerking? Can MailWizz handle them?

thanks again!

GroByTech · Sep 25, 2024

have you checked SPF record?

UncLe Spam · Sep 25, 2024

whosethis said:
thanks for the response.

Sigh looks like im stuck...

btw what software do you use to control say 1k or 10k outlook/hotmail webmail accs via SMTP? is it m@ilerking? Can MailWizz handle them?

thanks again!

I've never used MailWizz. Mailerking can for sure handle it but remember those things I said that may be in place I mentioned them in the other thread.

UncLe Spam said:
I'm not mailing right now but the last time that I was I was using microsoft hotmail/outlook webmail accounts. Like I said though I think they changed how smtp works with their accounts.

I'm not sure if this is in place 100% right now I would need to test or someone needs to test but what their going to end up doing is this...
Convo with a friend below:

Me: sup I've heard hotmail made some changes with SMTP
Friend: they're removing plain text auth from imap smtp and pop
Freind: It will now have OAuth2
Me: I see so mailers like mailer king will never work I guess anymore
Friend: correct

I'm just talking mailer king won't work with hotmail and that's it but I'm not certain it's like that currently right now.

whosethis · Sep 26, 2024

memon421 said:
have you checked SPF record?

hey yes all DKIM, DMARC, SPF everything is 100% - even said PASS on Gmail for everything before this happened

UncLe Spam said:
Freind: It will now have OAuth2
Me: I see so mailers like mailer king will never work I guess anymore
Friend: correct

Thanks for flagging this - guess email truly is dead?
What would you use if MailerKing dies?

So today domain.com (one not used to send cold) was behaving OK on the few gmail seeds I have...
But Outlook is definitely dead for my domain.com - wont even go to Spam - straight quarantine - hows is this even possible?!
Never even emailed Outlook anything cold from domain.com (only sent to Outlook addresses which have [email protected] added to safe sender list and was inboxing everyday last couple of months!)... and almost nothing from domain.net (which would be understandable if it got banned as at least it was used)

The only thing that comes to mind is when first got the VPS (for domain.net) the IP was already showing on RATS list = the next couple of days it showed GREEN on MXTOOLS so assumed it was some temporary issue... now its back on RATS = could Outlook be using RATS? and then because domain.com is the same name as domain.net they've banned domain.com as well?!
This is insane... does anyone know if they should unban domain.com at some point?!
Is there a postmaster equivalent for Outlook/hotmail I can contact?

Would really appreciate any/all pointers from anyone!

UncLe Spam · Sep 26, 2024

whosethis said:
Thanks for flagging this - guess email truly is dead?
What would you use if MailerKing dies?

No it's not dead.
Mailer King can still be used. Like I said this may be going on with hotmail currently and just hotmail not all webmail accounts.
I will talk to a friend tonight about the OAuth2 being in place or not.

whosethis · Sep 26, 2024

UncLe Spam said:
No it's not dead.
Mailer King can still be used. Like I said this may be going on with hotmail currently and just hotmail not all webmail accounts.
I will talk to a friend tonight about the OAuth2 being in place or not.

oh right so @outlook.com is ok? literally just @hotmail.com is affected?

would love to hear what your friend says

UncLe Spam · Sep 26, 2024

whosethis said:
oh right so @outlook.com is ok? literally just @hotmail.com is affected?

would love to hear what your friend says

outlook.com/hotmail.com both the same it would take place for both.

I will see what they say I've already asked them just waiting on response.

UncLe Spam · Sep 27, 2024

whosethis said:
would love to hear what your friend says

OAuth2 is not in place and things are still plain text. Mailer King will work nothing has changed.

whosethis · Sep 30, 2024

awesome! thanks a lot for your input! much appreciate @UncLe Spam

UncLe Spam · Oct 5, 2024

UncLe Spam said:
OAuth2 is not in place and things are still plain text. Mailer King will work nothing has changed.

@whosethis

was just told this:
Hey bro, just keep you updated: now seems hotmail disabled plain text login, force to use oauth2

And I tested both lution and bee account, lution already support OAuth2 smtp sending, where bee can not, bee can generate OAuth token too, but only for POP3

Gmail failure 550-5.7.1

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