Sometimes, informatics blocks the SMTP(Simple Mail Transfer Protocol) for preventing Virus attack and another security issue. therefore you'll strive dynamic or modifying the SMTP port for partitioning your iPhone email issue. the subsequent steps you'll follow for it.
Now, choose Server Settings for authentication checking. After that, provides a port range as 465 by choosing SSL tab.
Finally, exit from this manual settings and rehear once more with the e-mail address and countersign from your iPhone.
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