Title: Problem sending mails Last modified: June 15, 2022 --- # Problem sending mails * Resolved [conquistainternet](https://wordpress.org/support/users/conquistainternet/) * (@conquistainternet) * [4 years, 1 month ago](https://wordpress.org/support/topic/problem-sending-mails/) * We’re using the free version of your service and have it configured to use your servers to send emails. Some emails don’t arrive and we’ve detected that it’s because the server that sends them is on a blacklist. Looking at the history we see that some emails have been sent and others have not. Is this normal or is there something wrong with the configuration? * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fproblem-sending-mails%2F%3Foutput_format%3Dmd&locale=en_US) to see the link]_ Viewing 4 replies - 1 through 4 (of 4 total) * Plugin Support [Dani F. a11n](https://wordpress.org/support/users/danielinhou/) * (@danielinhou) * [4 years, 1 month ago](https://wordpress.org/support/topic/problem-sending-mails/#post-15741328) * Hi there [@conquistainternet](https://wordpress.org/support/users/conquistainternet/) 👋🏽! * Thank you for reaching out to MailPoet Support! * Could you please confirm whether the emails are not arriving or the issue is that they are not being sent? * Looking forward to hearing from you! * Cheers! * Thread Starter [conquistainternet](https://wordpress.org/support/users/conquistainternet/) * (@conquistainternet) * [4 years, 1 month ago](https://wordpress.org/support/topic/problem-sending-mails/#post-15745753) * Hello, I’ve been looking at the logs. * They’re from the 9th and 10th of June. 11 emails didn’t arrive, almost half of them. * I show you some of them: RCPT from wrqvqbbz.outbound-mail.sendgrid.net[149.72.75.190]: 554 5.7.1 Service unavailable; Client host [149.72.75.190] blocked using bl.spamcop. net; Blocked – see [https://www.spamcop.net/bl.shtml?149.72.75.190](https://www.spamcop.net/bl.shtml?149.72.75.190) 10/06/2022 15:01:40 * RCPT from o1.7nf.shared.sendgrid.net[167.89.101.76]: 554 5.7.1 Service unavailable; Client host [167.89.101.76] blocked using bl.spamcop.net; Blocked – see [https://www.spamcop.net/bl.shtml?167.89.101.76](https://www.spamcop.net/bl.shtml?167.89.101.76) 10/06/2022 14:41:47 * RCPT from wrqvqcth.outbound-mail.sendgrid.net[149.72.76.112]: 554 5.7.1 Service unavailable; Client host [149.72.76.112] blocked using bl.spamcop.net; Blocked– see [https://www.spamcop.net/bl.shtml?149.72.76.112](https://www.spamcop.net/bl.shtml?149.72.76.112) 0/06/2022 14:39:58 * Thanks! * Thread Starter [conquistainternet](https://wordpress.org/support/users/conquistainternet/) * (@conquistainternet) * [4 years, 1 month ago](https://wordpress.org/support/topic/problem-sending-mails/#post-15752674) * Good afternoon, I think I got confused and it isn’t sending with your servers but with Sendgrid’s servers. * I’ll confirm it and if so, I’ll close the thread. * Thanks! * Thread Starter [conquistainternet](https://wordpress.org/support/users/conquistainternet/) * (@conquistainternet) * [4 years, 1 month ago](https://wordpress.org/support/topic/problem-sending-mails/#post-15756205) * Thanks, It was Sendgrid. Viewing 4 replies - 1 through 4 (of 4 total) The topic ‘Problem sending mails’ is closed to new replies. * ![](https://ps.w.org/mailpoet/assets/icon-256x256.png?rev=3284564) * [MailPoet - Newsletters, Email Marketing, and Automation](https://wordpress.org/plugins/mailpoet/) * [Frequently Asked Questions](https://wordpress.org/plugins/mailpoet/#faq) * [Support Threads](https://wordpress.org/support/plugin/mailpoet/) * [Active Topics](https://wordpress.org/support/plugin/mailpoet/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/mailpoet/unresolved/) * [Reviews](https://wordpress.org/support/plugin/mailpoet/reviews/) * 4 replies * 2 participants * Last reply from: [conquistainternet](https://wordpress.org/support/users/conquistainternet/) * Last activity: [4 years, 1 month ago](https://wordpress.org/support/topic/problem-sending-mails/#post-15756205) * Status: resolved