His appointment was also seen as a relief for press secretary Sean Spicer who had been combining his own role with that of communications director, according to Fox. He is still working at the White House and has not set a departure date yet.
White House counsellor Kellyanne Conway told The Associated Press on Tuesday that Mr Dubke resigned before Mr Trump left for his worldwide trip earlier this month, suggesting that his departure is not linked to any pending shake-ups.
"He has expressed his desire to leave the White House and made very clear that he would see through the president's global trip", she said.
"As far as wiretapping, I guess, by - you know - [the Obama] administration, at least we have something in common, perhaps", Trump said in March during a press conference with Merkel.More news: President Trump Plans to Exit the Paris Accord on Climate Change
Dubke only took the communications director job in February, helping relieve White House Press Secretary Sean Spicer, who had initially shouldered the dual burden of crafting the administration's message and delivering that message at press briefings.
His communications firm, Crossroads Media was favorited by establishment Republicans like John Boehner and Dubke had close ties with frequent Trump critic Karl Rove.
Mike Dubke, right, then-White House communications director, at a news conference in the East Room of the White House in April.
He described the media's determination to bring down President Donald Trump as unprecedented and targeted.
Dubke resigned just before Trump left on his foreign trip but will stay on until a transition is concluded, Reince Priebus, the White House chief of staff, said.More news: To many Americans, Memorial Day has lost its meaning
CNN reported on Tuesday that intercepted U.S. intelligence revealed that Russian officials discussed potentially "derogatory" information about Trump and other campaign officials. Very bad for US.
"President Trump has a magnetic personality and exudes positive energy, which is infectious to those around him", the statement from White House spokeswoman Hope Hicks reads.
A senior official told NBC News that the Republican media strategist submitted a letter of resignation.
She said he would be back at the podium to brief reporters on Tuesday.
"They have talked to many people, including me", Mr Bossie said.More news: Pope, Trudeau talk about reconciliation with Canada's indigenous people
The disclosure of the back channel has put the White House on the defensive.