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Most Hard bounces are from yahoo mail
- Thread starter josephcvh
- Start date
Do you use private smtp?
First check why you get hard bounces, error like this:
mean that email doesn't exist.
Means you not process warm up, for some user click span button and you should wait and try again
Try register in yahoo FBL,
and fallow warm up process:
First check why you get hard bounces, error like this:
Code:
554 delivery error: dd Not a valid recipient - atlas207.free.mail.gq1.yahoo.com
Code:
smtp; 421 4.7.0 [TSS04] Messages from 195.201.... temporarily deferred due to user complaints - 4.16.55.1; see https://postmaster.verizonmedia.com/error-codes: retry timeout exceededTry register in yahoo FBL,
and fallow warm up process:
Warming Up an IP Address | SendGrid Docs | Twilio
Learn how to warmup your new dedicated IP address and why it's important.
sendgrid.com
Last edited:
Do you use private smtp?
First check why you get hard bounces, error like this:
mean that email doesn't exist.Code:554 delivery error: dd Not a valid recipient - atlas207.free.mail.gq1.yahoo.com
Means you not process warm up, for some user click span button and you should wait and try againCode:smtp; 421 4.7.0 [TSS04] Messages from 195.201.... temporarily deferred due to user complaints - 4.16.55.1; see https://postmaster.verizonmedia.com/error-codes: retry timeout exceeded
Try register in yahoo FBL,
and fallow warm up process:
Warming Up an IP Address | SendGrid Docs | Twilio
Learn how to warmup your new dedicated IP address and why it's important.sendgrid.com
Hi @majid1f ,
I am using Amazon SES as my delivery server.
Most of the yahoo hard bounces are error like you mention:
Code:
smtp; 554 delivery error: dd Not a valid recipient - atlas121.free.mail.ne1.yahoo.com
Code:
smtp; 554 delivery error: dd Not a valid recipient - atlas124.free.mail.gq1.yahoo.com
Code:
smtp; 554 delivery error: dd Not a valid recipient - atlas203.free.mail.bf1.yahoo.comBefore sending out the list, I have run a filter using DeBounce. But the results of these emails status are "Safe to send".
I wonder what else can I prevent this? As my Amazon SES bounce rate is now 6.7%.
Thank you,
Joseph
It's obvious, emails are invalid,Hi @majid1f ,
I am using Amazon SES as my delivery server.
Most of the yahoo hard bounces are error like you mention:
Code:smtp; 554 delivery error: dd Not a valid recipient - atlas121.free.mail.ne1.yahoo.comCode:smtp; 554 delivery error: dd Not a valid recipient - atlas124.free.mail.gq1.yahoo.comCode:smtp; 554 delivery error: dd Not a valid recipient - atlas203.free.mail.bf1.yahoo.com
Before sending out the list, I have run a filter using DeBounce. But the results of these emails status are "Safe to send".
I wonder what else can I prevent this? As my Amazon SES bounce rate is now 6.7%.
Thank you,
Joseph
For yohoo mail, try : thecheker, I had better result.