Error: SMTP Error 446
What's Causing This Error
This error occurs when the maximum hop count exceeds. The hop count is the number of mail servers the email message passes through to reach its destination (recipient). The hop count may increase when specific mail servers trigger various redirections. Ultimately these redirections may cause the hop count to exceed the maximum and will not send the email as the sender's SMTP server could not figure out the destination.
Additionally, you may encounter this error in Office 365 if there are one or more unverified domains.
Solution - Here's How To Resolve It
Sometimes, you may have a complex organizational structure and require your email to route through different servers before it reaches the internet. In such scenarios, consider increasing the maximum hop count. However, note that the hop count can only be between 10 and 256.
On the other hand, if you are running Office 365 as your SMTP client, ensure that all the mail domains are verified.
Finally, if nothing works, contact the SMTP provider to obtain more information on what can cause the hop count to exceed.
Other Common SMTP Errors (and Solutions)
- SMTP Error 101
- SMTP Error 111
- SMTP Error 221
- SMTP Error 250
- SMTP Error 420
- SMTP Error 421
- SMTP Error 422
- SMTP Error 431
- SMTP Error 432
- SMTP Error 441
- SMTP Error 442
- SMTP Error 447
- SMTP Error 449
- SMTP Error 450
- SMTP Error 452
- SMTP Error 453
- SMTP Error 454
- SMTP Error 455
- SMTP Error 458
- SMTP Error 459
- SMTP Error 471
- SMTP Error 451
- SMTP Error 500
- SMTP Error 501
- SMTP Error 502
- SMTP Error 503
- SMTP Error 504
- SMTP Error 510
- SMTP Error 511
- SMTP Error 512
- SMTP Error 513
- SMTP Error 515
- SMTP Error 517
- SMTP Error 521
- SMTP Error 522
- SMTP Error 523
- SMTP Error 530
- SMTP Error 531
- SMTP Error 533
- SMTP Error 534
- SMTP Error 535
- SMTP Error 538
- SMTP Error 540
- SMTP Error 541
- SMTP Error 542
- SMTP Error 543
- SMTP Error 546
- SMTP Error 547
- SMTP Error 550
- SMTP Error 551
- SMTP Error 552
- SMTP Error 553
- SMTP Error 554
- SMTP Error 555
- SMTP Error 556
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- SMTP Error Codes
View all errors
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